Document:

EXHIBIT 4.1

 

NEITHER THIS SECURITY NOR THE SECURITIES
FOR WHICH THIS SECURITY IS EXERCISABLE HAVE BEEN REGISTERED WITH THE SECURITIES AND EXCHANGE COMMISSION OR THE SECURITIES COMMISSION
OF ANY STATE IN RELIANCE UPON AN EXEMPTION FROM REGISTRATION UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE “SECURITIES
ACT”), AND, ACCORDINGLY, MAY NOT BE OFFERED OR SOLD EXCEPT PURSUANT TO AN EFFECTIVE REGISTRATION STATEMENT UNDER THE SECURITIES
ACT OR PURSUANT TO AN AVAILABLE EXEMPTION FROM, OR IN A TRANSACTION NOT SUBJECT TO, THE REGISTRATION REQUIREMENTS OF THE SECURITIES
ACT AND IN ACCORDANCE WITH APPLICABLE STATE SECURITIES LAWS AS EVIDENCED BY A LEGAL OPINION OF COUNSEL TO THE TRANSFEROR TO SUCH
EFFECT, THE SUBSTANCE OF WHICH SHALL BE REASONABLY ACCEPTABLE TO THE COMPANY. THIS SECURITY AND THE SECURITIES ISSUABLE UPON EXERCISE
OF THIS SECURITY MAY BE PLEDGED IN CONNECTION WITH A BONA FIDE MARGIN ACCOUNT OR OTHER LOAN SECURED BY SUCH SECURITIES.

 

COMMON STOCK PURCHASE WARRANT

 

Interleukin
Genetics, Inc.

 

	Warrant Shares: _______	May 17, 2013

 

THIS COMMON STOCK PURCHASE
WARRANT (the “Warrant”) certifies that, for value received, _____________ (the “Holder”)
is entitled, upon the terms and subject to the limitations on exercise and the conditions hereinafter set forth, at any time on
or after the Initial Exercise Date (as defined below), and on or prior to the close of business on the seven (7) year anniversary
of the Initial Exercise Date (the “Termination Date”) but not thereafter, to subscribe for and purchase from
Interleukin Genetics, Inc., a Delaware corporation (the “Company”), up to ___________ shares (the “Warrant
Shares”) of Common Stock. The purchase price of one share of Common Stock under this Warrant shall be equal to the Exercise
Price, as defined in Section 2(b). The “Initial Exercise Date” shall mean the date hereof with respect to 63%
of the Warrant Shares and the date of the Shareholder Approval of Increase in Authorized Shares with respect to 37% of the Warrant
Shares.

 

Section 1.Definitions.
Capitalized terms used and not otherwise defined herein shall have the meanings set forth in that certain Common Stock Purchase
Agreement (the “Purchase Agreement”), dated May 17, 2013, among the Company and the purchasers signatory thereto.

 

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Section 2.Exercise.

 

a)                 
Exercise of Warrant. Exercise of the purchase rights represented by this Warrant may be made, in whole or in part,
at any time or times on or after the Initial Exercise Date and on or before the Termination Date by delivery to the Company (or
such other office or agency of the Company as it may designate by notice in writing to the registered Holder at the address of
the Holder appearing on the books of the Company) of a duly executed facsimile copy of the Notice of Exercise Form annexed hereto;
and, within three (3) Trading Days of the date said Notice of Exercise is delivered to the Company, the Company shall have received
payment in the amount obtained by multiplying the Exercise Price then in effect by the number of Warrant Shares thereby being purchased,
as designated in the Notice of Exercise (the “Aggregate Exercise Price”) by wire transfer or cashier’s
check drawn on a United States bank or pursuant to the cashless exercise procedure specified in Section 2(c) below. Notwithstanding
anything herein to the contrary, the Holder shall not be required to physically surrender this Warrant to the Company until the
Holder has purchased all of the Warrant Shares available hereunder and the Warrant has been exercised in full, in which case, the
Holder shall surrender this Warrant to the Company for cancellation within three (3) Trading Days of the date the final Notice
of Exercise is delivered to the Company. Partial exercises of this Warrant resulting in purchases of a portion of the total number
of Warrant Shares available hereunder shall have the effect of lowering the outstanding number of Warrant Shares purchasable hereunder
in an amount equal to the applicable number of Warrant Shares purchased. The Holder and the Company shall maintain records showing
the number of Warrant Shares purchased and the date of such purchases. The Company shall deliver any objection to any Notice of
Exercise Form within two (2) Business Days of receipt of such notice. The Holder and any assignee, by acceptance of this Warrant,
acknowledge and agree that, by reason of the provisions of this paragraph, following the purchase of a portion of the Warrant Shares
hereunder, the number of Warrant Shares available for purchase hereunder at any given time may be less than the amount stated on
the face hereof.

 

b)                 
Exercise Price. The exercise price per share of the Common Stock under this Warrant shall be $0.2745, subject to
adjustment hereunder (the “Exercise Price”).

 

c)                 
Cashless Exercise. In lieu of payment of the Aggregate Exercise Price, at the option of the Holder, this Warrant
may also be exercised, in whole or in part, at such time by means of a “cashless exercise” in which the Holder shall
be entitled to receive a certificate for the number of Warrant Shares equal to the quotient obtained by dividing [(A-B) (X)] by
(A), where:

 

(A) =  the
VWAP on the Trading Day immediately preceding the date on which Holder elects to exercise this Warrant by means of a “cashless
exercise,” as set forth in the applicable Notice of Exercise;

 

(B) =  the
Exercise Price of this Warrant, as adjusted hereunder; and

 

 

(X) =
  the number of Warrant Shares that would be issuable upon exercise of this Warrant in accordance with the terms of this Warrant
if such exercise were by means of a cash exercise rather than a cashless exercise.

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“VWAP”
means, for any date, the price determined by the first of the following clauses that applies: (a) if the Common Stock is then listed
or quoted on a Trading Market, the daily volume weighted average price of the Common Stock for such date (or the nearest preceding
date) on the Trading Market on which the Common Stock is then listed or quoted as reported by Bloomberg L.P. (based on a Trading
Day from 9:30 a.m. (New York City time) to 4:02 p.m. (New York City time), (b)  if the Common Stock is not then listed or
quoted for trading on a Trading Market and if prices for the Common Stock are then reported in the “Pink Sheets” published
by Pink OTC Markets, Inc. (or a similar organization or agency succeeding to its functions of reporting prices), the most recent
bid price per share of the Common Stock so reported, or (c) in all other cases, the fair market value of a share of Common
Stock as determined by an independent appraiser selected in good faith by the Company and reasonably acceptable to the Holders
of a majority in interest of the Securities then outstanding, the fees and expenses of which shall be paid by the Company.

 

“Trading
Day” means a day on which the principal Trading Market is open for trading.

 

“Trading
Market” means any of the following markets or exchanges on which the Common Stock is listed or quoted for trading on
the date in question: the NYSE MKT, the NASDAQ Capital Market, the NASDAQ Global Market, the NASDAQ Global Select Market, the New
York Stock Exchange, the OTCQB or the OTC Bulletin Board (or any successors to any of the foregoing).

 

 

d)                
Mechanics of Exercise.

 

		 	i.       
Delivery of Certificates Upon Exercise. Certificates for shares purchased hereunder shall be transmitted by the Transfer
Agent to the Holder by crediting the account of the Holder’s prime broker with the Depository Trust Company through its Deposit
Withdrawal Agent Commission (“DWAC”) system if the Company is then a participant in such system and the Holder
is not an affiliate of the Company and either (A) there is an effective Registration Statement permitting the resale of the Warrant
Shares by Holder or (B) this Warrant is being exercised via cashless exercise at least six months following the Initial Exercise
Date, and otherwise by physical delivery to the address specified by the Holder in the Notice of Exercise by the date that is three
(3) Trading Days after the latest of (A) the delivery to the Company of the Notice of Exercise Form, (B) surrender of this Warrant
(if required) and (C) payment of the Aggregate Exercise Price as set forth above (including by cashless exercise). This Warrant
shall be deemed to have been exercised on the first date on which all of the foregoing have been delivered to the Company. The
Warrant Shares shall be deemed to have been issued, and Holder or any other person so designated to be named therein shall be deemed
to have become a holder of record of such shares for all purposes, as of the date the Warrant has been exercised, with payment
to the Company of the Exercise Price (or by cashless exercise) and all taxes required to be paid by the Holder, if any, pursuant
to Section 2(d)(iv) prior to the issuance of such shares, having been paid.

 

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		 	ii.        Delivery of New Warrants Upon Exercise. If this Warrant shall have been exercised in part, the Company shall, at
the request of a Holder and upon surrender of this Warrant certificate, at the time of delivery of the certificate or certificates
representing Warrant Shares, deliver to Holder a new Warrant evidencing the rights of Holder to purchase the unpurchased Warrant
Shares called for by this Warrant, which new Warrant shall in all other respects be identical with this Warrant.

 

		 	iii.       No Fractional Shares or Scrip. No fractional shares or scrip representing fractional shares shall be issued upon
the exercise of this Warrant. As to any fraction of a share which the Holder would otherwise be entitled to purchase upon such
exercise, the Company shall, at its election, either pay a cash adjustment in respect of such final fraction in an amount equal
to such fraction multiplied by the Exercise Price or round up to the next whole share.

 

		 	iv.      Charges, Taxes and Expenses. Issuance of certificates for Warrant Shares shall be made without charge to the Holder
for any issue or transfer tax or other incidental expense in respect of the issuance of such certificate, all of which taxes and
expenses shall be paid by the Company, and such certificates shall be issued in the name of the Holder or in such name or names
as may be directed by the Holder; provided, however, that in the event certificates for Warrant Shares are to be
issued in a name other than the name of the Holder, this Warrant when surrendered for exercise shall be accompanied by the Assignment
Form attached hereto duly executed by the Holder and the Company may require, as a condition thereto, the payment of a sum sufficient
to reimburse it for any transfer tax incidental thereto.

 

		 	v.       Closing of Books. The Company will not close its stockholder books or records in any manner which prevents the timely
exercise of this Warrant, pursuant to the terms hereof.

 

Section 3.Certain
Adjustments.

 

a)                 
Stock Dividends and Splits. In case of: (i) any subdivision or combination of the Common Stock or (ii) any declaration
or payment, without consideration, of any dividend on the Common Stock payable in shares of the Company’s capital stock or
in any right to acquire shares of its capital stock without consideration, the number of shares of Common Stock or other security
issuable upon exercise hereof shall be proportionately increased or decreased, as appropriate, and the Exercise Price shall be
proportionately adjusted such that the Aggregate Exercise Price of this Warrant shall remain unchanged. Any adjustment made pursuant
to this Section 3(a) shall become effective immediately after the record date for the determination of stockholders entitled to
receive such dividend or distribution and shall become effective immediately after the effective date in the case of a subdivision
or combination.

 

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b)                 
Reclassification. In case of any reclassification of or similar change in the Common Stock, the Company shall execute
a new Warrant having substantially similar terms and providing that the holder of this Warrant shall have the right to exercise
such new Warrant for the kind and number of shares of stock, other securities, money or property receivable upon such reclassification
or change by holders of the Common Stock.

 

c)                 
Fundamental Transaction. If, at any time while this Warrant is outstanding, (i) the Company, directly or indirectly,
in one or more related transactions effects any merger or consolidation of the Company with or into another Person and the Company
is not the surviving corporation, (ii) the Company, directly or indirectly, effects any sale, lease, license, assignment, transfer,
conveyance or other disposition of all or substantially all of its assets in one or a series of related transactions, (iii) any,
direct or indirect, purchase offer, tender offer or exchange offer (whether by the Company or another Person) is completed pursuant
to which holders of Common Stock are permitted to sell, tender or exchange their shares for other securities, cash or property
and has been accepted by the holders of 50% or more of the outstanding Common Stock, (iv) the Company, directly or indirectly,
in one or more related transactions effects any reclassification, reorganization or recapitalization of the Common Stock or any
compulsory share exchange pursuant to which the Common Stock is effectively converted into or exchanged for other securities, cash
or property, (v) the Company, directly or indirectly, in one or more related transactions consummates a stock or share purchase
agreement or other business combination (including, without limitation, a reorganization, recapitalization, spin-off or scheme
of arrangement) with another Person whereby such other Person acquires more than 50% of the outstanding shares of Common Stock
(not including any shares of Common Stock held by the other Person or other Persons making or party to, or associated or affiliated
with the other Persons making or party to, such stock or share purchase agreement or other business combination) (each a “Fundamental
Transaction”), then, upon any subsequent exercise of this Warrant, the Holder shall have the right to receive, for each
Warrant Share that would have been issuable upon such exercise immediately prior to the occurrence of such Fundamental Transaction,
at the option of the Holder (without regard to any limitation in Section 2(e) on the exercise of this Warrant), the number of shares
of Common Stock of the successor or acquiring corporation or of the Company, if it is the surviving corporation, and any additional
consideration (the “Alternate Consideration”) receivable as a result of such Fundamental Transaction by a holder
of the number of shares of Common Stock for which this Warrant is exercisable immediately prior to such Fundamental Transaction.
For purposes of any such exercise, the determination of the Exercise Price shall be appropriately adjusted to apply to such Alternate
Consideration based on the amount of Alternate Consideration issuable in respect of one share of Common Stock in such Fundamental
Transaction, and the Company shall apportion the Exercise Price among the Alternate Consideration in a reasonable manner reflecting
the relative value of any different components of the Alternate Consideration. If holders of Common Stock are given any choice
as to the securities, cash or property to be received in a Fundamental Transaction, then the Holder shall be given the same choice
as to the

 

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Alternate Consideration
it receives upon any exercise of this Warrant following such Fundamental Transaction. The Company shall cause any successor entity
in a Fundamental Transaction in which the Company is not the survivor (the “Successor Entity”) to assume all
of the obligations of the Company under this Warrant in accordance with the provisions of this Section 3(e) prior to such Fundamental
Transaction and shall, at the option of the holder of this Warrant, deliver to the Holder in exchange for this Warrant a security
of the Successor Entity evidenced by a written instrument substantially similar in form and substance to this Warrant which is
exercisable for a corresponding number of shares of capital stock of such Successor Entity (or its parent entity) equivalent to
the shares of Common Stock acquirable and receivable upon exercise of this Warrant prior to such Fundamental Transaction, and with
an exercise price which applies the exercise price hereunder to such shares of capital stock (but taking into account the relative
value of the shares of Common Stock pursuant to such Fundamental Transaction and the value of such shares of capital stock, such
number of shares of capital stock and such exercise price being for the purpose of protecting the economic value of this Warrant
immediately prior to the consummation of such Fundamental Transaction), and which is reasonably satisfactory in form and substance
to the Holder. Upon the occurrence of any such Fundamental Transaction, the Successor Entity shall succeed to, and be substituted
for (so that from and after the date of such Fundamental Transaction, the provisions of this Warrant and the other Transaction
Documents referring to the “Company” shall refer instead to the Successor Entity), and may exercise every right and
power of the Company and shall assume all of the obligations of the Company under this Warrant with the same effect as if such
Successor Entity had been named as the Company herein. “Person” shall mean an individual or corporation, partnership,
trust, incorporated or unincorporated association, joint venture, limited liability company, joint stock company, government (or
an agency or subdivision thereof) or other entity of any kind

 

d)                
Calculations. All calculations under this Section 3 shall be made to the nearest cent or the nearest 1/100th of a
share, as the case may be. For purposes of this Section 3, the number of shares of Common Stock deemed to be issued and outstanding
as of a given date shall be the sum of the number of shares of Common Stock (excluding treasury shares, if any) issued and outstanding.

 

e)                 
Notice to Holder.

 

		 	i.        Adjustment. Whenever the Exercise Price or the number of shares of Common Stock issuable upon exercise is adjusted
pursuant to any provision of this Section 3, the Company shall promptly mail to the Holder a notice setting forth the Exercise
Price after such adjustment and setting forth a brief statement of the facts requiring such adjustment.

 

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		 	ii.       Notice to Allow Exercise by Holder. If during the term during which this Warrant may be exercised (A) the Company
shall declare a dividend (or any other distribution in whatever form) on the Common Stock, (B) the Company shall declare a special
nonrecurring cash dividend on or a redemption of the Common Stock, (C) the Company shall authorize the granting to all holders
of the Common Stock rights or warrants to subscribe for or purchase any shares of capital stock of any class or of any rights,
(D) the approval of any stockholders of the Company shall be required in connection with any consolidation or merger to which the
Company is a party, any sale or transfer of all or substantially all of the assets of the Company, or any compulsory share exchange
whereby the Common Stock is converted into other securities, cash or property, or (E) the Company shall authorize the voluntary
or involuntary dissolution, liquidation or winding up of the affairs of the Company, then, in each case, the Company shall cause
to be mailed to the Holder at its last address as it shall appear upon the Warrant Register (as defined below) of the Company,
at least 10 calendar days prior to the applicable record or effective date hereinafter specified, a notice stating (x) the date
on which a record is to be taken for the purpose of such dividend, distribution, redemption, rights or warrants, or if a record
is not to be taken, the date as of which the holders of the Common Stock of record to be entitled to such dividend, distributions,
redemption, rights or warrants are to be determined or (y) the date on which such consolidation, merger, sale, transfer or share
exchange is expected to become effective or close, and the date as of which it is expected that holders of the Common Stock of
record shall be entitled to exchange their shares of the Common Stock for securities, cash or other property deliverable upon such
reclassification, consolidation, merger, sale, transfer or share exchange; provided that the failure to mail such notice or any
defect therein or in the mailing thereof shall not affect the validity of the corporate action required to be specified in such
notice. To the extent that any notice provided hereunder constitutes, or contains, material, non-public information regarding the
Company or any of the subsidiaries of the Company, the Company shall simultaneously file such notice with the SEC pursuant to a
Current Report on Form 8-K. The Holder shall remain entitled to exercise this Warrant during the period commencing on the date
of such notice to the effective date of the event triggering such notice except as may otherwise be expressly set forth herein.

  

Section 4.Transfer
of Warrant.

 

a)                 
Transferability. Subject to compliance with any applicable securities laws and the conditions set forth in Section
4(d) hereof and to the provisions of Section 5 of the Purchase Agreement, this Warrant and all rights hereunder (including, without
limitation, any registration rights) are transferable, in whole or in part, upon surrender of this Warrant at the principal office
of the Company or its designated agent, together with a written assignment of this Warrant substantially in the form of the Assignment
Form attached hereto duly executed by the Holder or its agent or attorney and funds sufficient to pay any transfer taxes payable
upon the making of such transfer. Upon such surrender and, if required, such payment, the Company shall execute and deliver a new
Warrant or Warrants in the name of the assignee or assignees, as applicable, and in the denomination or denominations specified
in such instrument of assignment, and shall issue to the assignor a new Warrant evidencing the portion of this Warrant not so assigned,
and this Warrant shall promptly be cancelled. The Warrant, if properly assigned in accordance herewith, may be exercised by a new
holder for the purchase of Warrant Shares without having a new Warrant issued.

 

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b)                 
New Warrants. This Warrant may be divided or combined with other Warrants upon presentation hereof at the aforesaid
office of the Company, together with a written notice specifying the names and denominations in which new Warrants are to be issued,
signed by the Holder or its agent or attorney. Subject to compliance with Section 4(a), as to any transfer which may be involved
in such division or combination, the Company shall execute and deliver a new Warrant or Warrants in exchange for the Warrant or
Warrants to be divided or combined in accordance with such notice. All Warrants issued on transfers or exchanges shall be dated
the initial issuance date set forth on the first page of this Warrant and shall be identical with this Warrant except as to the
number of Warrant Shares issuable pursuant thereto.

 

c)                 
Warrant Register. The Company shall register this Warrant, upon records to be maintained by the Company for that
purpose (the “Warrant Register”), in the name of the record Holder hereof from time to time. The Company may
deem and treat the registered Holder of this Warrant as the absolute owner hereof for the purpose of any exercise hereof or any
distribution to the Holder, and for all other purposes, absent actual notice to the contrary.

 

d)                
Transfer Restrictions. If, at the time of the surrender of this Warrant in connection
with any transfer of this Warrant, the transfer of this Warrant shall not be either (i) registered pursuant to an effective registration
statement under the Securities Act and under applicable state securities or blue sky laws or (ii) eligible for resale without volume
or manner-of-sale restrictions or current public information requirements pursuant to Rule 144, the Company may require, as a condition
of allowing such transfer, that the Holder or transferee of this Warrant, as the case may be, comply with the provisions of Section
9(h) of the Purchase Agreement.

  

e)                 
Representation by the Holder. The Holder, by the acceptance hereof, represents and warrants that it is acquiring
this Warrant and, upon any exercise hereof, will acquire the Warrant Shares issuable upon such exercise, for its own account and
not with a view to or for distributing or reselling such Warrant Shares or any part thereof in violation of the Securities Act
or any applicable state securities law, except pursuant to sales registered or exempted under the Securities Act.

 

Section 5.Miscellaneous.

 

a)                 
No Rights as Stockholder Until Exercise. This Warrant does not entitle the Holder to any voting rights, dividends
or other rights as a stockholder of the Company prior to the exercise hereof as set forth in Section 2(d)(i).

 

b)                 
Loss, Theft, Destruction or Mutilation of Warrant. The Company covenants that upon receipt by the Company of evidence
reasonably satisfactory to it of the loss, theft, destruction or mutilation of this Warrant or any stock certificate relating to
the Warrant Shares, and in case of loss, theft or destruction, of indemnity or security reasonably satisfactory to it (which, in
the case of the Warrant, shall not include the posting of any bond), and upon surrender and cancellation of such Warrant or stock
certificate, if mutilated, the Company will make and deliver a new Warrant or stock certificate of like tenor and dated as of such
cancellation, in lieu of such Warrant or stock certificate.

 

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c)                 
Saturdays, Sundays, Holidays, etc. If the last or appointed day for the taking of any action or the expiration of
any right required or granted herein shall not be a Business Day, then, such action may be taken or such right may be exercised
on the next succeeding Business Day.

 

d)                
Authorized Shares. The Company covenants that, during the period the Warrant is outstanding, it will reserve from
its authorized and unissued Common Stock a sufficient number of shares to provide for the issuance of the Warrant Shares upon the
exercise of any purchase rights under this Warrant. The Company further covenants that its issuance of this Warrant shall constitute
full authority to its officers who are charged with the duty of executing stock certificates to execute and issue the necessary
certificates for the Warrant Shares upon the exercise of the purchase rights under this Warrant. The Company will take all such
reasonable action as may be necessary to assure that such Warrant Shares may be issued as provided herein without violation of
any applicable law or regulation, or of any requirements of the Trading Market upon which the Common Stock may be listed. The Company
covenants that all Warrant Shares which may be issued upon the exercise of the purchase rights represented by this Warrant will,
upon exercise of the purchase rights represented by this Warrant and payment for such Warrant Shares in accordance herewith, be
duly authorized, validly issued, fully paid and nonassessable and free from all taxes, liens and charges created by the Company
in respect of the issue thereof (other than taxes in respect of any transfer occurring contemporaneously with such issue).

  

e)                 
No Impairment. Except and to the extent as waived or consented to by the Holder, the Company shall not by any action,
including, without limitation, amending its certificate of incorporation or through any reorganization, transfer of assets, consolidation,
merger, dissolution, issue or sale of securities or any other voluntary action, avoid or seek to avoid the observance or performance
of any of the terms of this Warrant, but will at all times in good faith assist in the carrying out of all such terms and in the
taking of all such actions as may be necessary or appropriate to protect the rights of Holder as set forth in this Warrant against
impairment.

 

f)                  
Jurisdiction. All questions concerning the construction, validity, enforcement and interpretation of this Warrant
shall be determined in accordance with the provisions of the Purchase Agreement.

 

g)                 
Nonwaiver and Expenses. No course of dealing or any delay or failure to exercise any right hereunder on the part
of Holder shall operate as a waiver of such right or otherwise prejudice Holder’s rights, powers or remedies. If the Company
willfully and knowingly fails to comply with any provision of this Warrant, which results in any material damages to the Holder,
the Company shall pay to Holder such amounts as shall be sufficient to cover any costs and expenses including, but not limited
to, reasonable attorneys’ fees, including those of appellate proceedings, incurred by Holder in collecting any amounts due
pursuant hereto or in otherwise enforcing any of its rights, powers or remedies hereunder.

 

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h)                 
Notices. Any notice, request or other document required or permitted to be given or delivered to the Holder by the
Company shall be delivered in accordance with the notice provisions of the Purchase Agreement.

 

i)                   
Limitation of Liability. No provision hereof and no enumeration herein of the rights or privileges of Holder, shall
give rise to any liability of Holder for the purchase price of any Common Stock or as a stockholder of the Company, whether such
liability is asserted by the Company or by creditors of the Company.

 

j)                   
Remedies. The Holder, in addition to being entitled to exercise all rights granted by law, including recovery of
damages, will be entitled to seek specific performance of its rights under this Warrant. The Company agrees that monetary damages
would not be adequate compensation for any loss incurred by reason of a breach by it of the provisions of this Warrant and hereby
agrees to waive and not to assert the defense in any action for specific performance that a remedy at law would be adequate.

 

k)                 
Successors and Assigns. Subject to applicable securities laws, this Warrant and the rights and obligations evidenced
hereby shall inure to the benefit of and be binding upon the successors and permitted assigns of the Company and the successors
and permitted assigns of Holder. The provisions of this Warrant are intended to be for the benefit of any Holder from time to time
of this Warrant and shall be enforceable by the Holder or holder of Warrant Shares.

  

l)                   
Amendment. This Warrant may be modified or amended or the provisions hereof waived with the written consent of the
Company and the Holder.

 

m)               
Severability. Wherever possible, each provision of this Warrant shall be interpreted in such manner as to be effective
and valid under applicable law, but if any provision of this Warrant shall be prohibited by or invalid under applicable law, such
provision shall be ineffective to the extent of such prohibition or invalidity, without invalidating the remainder of such provisions
or the remaining provisions of this Warrant.

 

n)                 
Headings. The headings used in this Warrant are for the convenience of reference only and shall not, for any purpose,
be deemed a part of this Warrant.

 

********************

 

(Signature Pages Follow)

 

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IN WITNESS WHEREOF, the
Company has caused this Warrant to be executed by its officer thereunto duly authorized as of the date first above indicated.

 

 

 

	
        Interleukin Genetics,
        Inc.

         

         

	
        By:__________________________________________

        Name: Kenneth S. Kornman

        Title: Chief Executive Officer

         

	 

 

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NOTICE OF EXERCISE

 

To:Interleukin
Genetics, Inc.

 

(1)  
The undersigned hereby elects to purchase ________ Warrant Shares of the Company pursuant to the terms of the attached Warrant
(only if exercised in full), and tenders herewith payment of the exercise price for said Warrant Shares in full, together with
all applicable transfer taxes, if any.

 

(2)  
Payment shall take the form of (check applicable box):

 

[ ] in lawful
money of the United States; or

 

[ ] the cancellation
of such number of Warrant Shares as is necessary, in accordance with the formula set forth in subsection 2(c), to exercise this
Warrant with respect to the maximum number of Warrant Shares purchasable pursuant to the cashless exercise procedure set forth
in subsection 2(c).

 

(3)  
Please issue a certificate or certificates representing said Warrant Shares in the name of the undersigned or in such other
name as is specified below:

 

	 	 	 

 

 

The Warrant Shares shall be delivered to
the following DWAC Account Number or by physical delivery of a certificate to:

 

	 	 	 
	 	 	 
	 	 	 
	 	 	 
	 	 	 

  

 

[SIGNATURE
OF HOLDER]

 

Name of Holder: ________________________________________________________________________

Signature of Authorized Signatory of
Holder: _________________________________________________

Name of Authorized Signatory: ___________________________________________________________________

Title of Authorized Signatory: ____________________________________________________________________

Date: ________________________________________________________________________________________

  

    	 

    	 

    

  

ASSIGNMENT FORM

 

(To assign the foregoing warrant, execute

this form and supply required information.

Do not use this form to exercise the warrant.)

 

 

 

FOR VALUE RECEIVED, [____]
all of or [_______] shares of the foregoing Warrant and all rights evidenced thereby are hereby assigned to

 

 

________________________________________________________________________
whose address is

 

______________________________________________________________________________________.

  

 

_______________________________________________________________________________________

 

Dated: ______________,
_______

 

 

	 	Holder’s Signature:	 	 
	 	 	 	 
	 	Holder’s Address:	 	 
	 	 	 	 
	 	 	 	 

  

Signature Guaranteed: ___________________________________________________________________

 

 

NOTE: The signature to this Assignment
Form must correspond with the name as it appears on the face of the Warrant, without alteration or enlargement or any change whatsoever,
and must be guaranteed by a bank or trust company. Officers of corporations and those acting in a fiduciary or other representative
capacity should file proper evidence of authority to assign the foregoing Warrant.EXHIBIT 4.2

 

NEITHER THIS SECURITY NOR THE SECURITIES
FOR WHICH THIS SECURITY IS EXERCISABLE HAVE BEEN REGISTERED WITH THE SECURITIES AND EXCHANGE COMMISSION OR THE SECURITIES COMMISSION
OF ANY STATE IN RELIANCE UPON AN EXEMPTION FROM REGISTRATION UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE “SECURITIES
ACT”), AND, ACCORDINGLY, MAY NOT BE OFFERED OR SOLD EXCEPT PURSUANT TO AN EFFECTIVE REGISTRATION STATEMENT UNDER THE SECURITIES
ACT OR PURSUANT TO AN AVAILABLE EXEMPTION FROM, OR IN A TRANSACTION NOT SUBJECT TO, THE REGISTRATION REQUIREMENTS OF THE SECURITIES
ACT AND IN ACCORDANCE WITH APPLICABLE STATE SECURITIES LAWS AS EVIDENCED BY A LEGAL OPINION OF COUNSEL TO THE TRANSFEROR TO SUCH
EFFECT, THE SUBSTANCE OF WHICH SHALL BE REASONABLY ACCEPTABLE TO THE COMPANY. THIS SECURITY AND THE SECURITIES ISSUABLE UPON EXERCISE
OF THIS SECURITY MAY BE PLEDGED IN CONNECTION WITH A BONA FIDE MARGIN ACCOUNT OR OTHER LOAN SECURED BY SUCH SECURITIES.

 

COMMON STOCK PURCHASE WARRANT

 

Interleukin
Genetics, Inc.

 

	Warrant Shares: _______	May 17, 2013

 

THIS COMMON STOCK PURCHASE
WARRANT (the “Warrant”) certifies that, for value received, _____________ (the “Holder”)
is entitled, upon the terms and subject to the limitations on exercise and the conditions hereinafter set forth, at any time on
or after the Initial Exercise Date (as defined below), and on or prior to the close of business on the seven (7) year anniversary
of the Initial Exercise Date (the “Termination Date”) but not thereafter, to subscribe for and purchase from
Interleukin Genetics, Inc., a Delaware corporation (the “Company”), up to ___________ shares (the “Warrant
Shares”) of Common Stock. The purchase price of one share of Common Stock under this Warrant shall be equal to the Exercise
Price, as defined in Section 2(b). The “Initial Exercise Date” shall mean the date of the Shareholder Approval
of Increase in Authorized Shares.

 

Section 1.Definitions.
Capitalized terms used and not otherwise defined herein shall have the meanings set forth in that certain Common Stock Purchase
Agreement (the “Purchase Agreement”), dated May 17, 2013, among the Company and the purchasers signatory thereto.

 

    	1

    	 

    
 

Section 2.Exercise.

 

a)                 
Exercise of Warrant. Exercise of the purchase rights represented by this Warrant may be made, in whole or in part,
at any time or times on or after the Initial Exercise Date and on or before the Termination Date by delivery to the Company (or
such other office or agency of the Company as it may designate by notice in writing to the registered Holder at the address of
the Holder appearing on the books of the Company) of a duly executed facsimile copy of the Notice of Exercise Form annexed hereto;
and, within three (3) Trading Days of the date said Notice of Exercise is delivered to the Company, the Company shall have received
payment in the amount obtained by multiplying the Exercise Price then in effect by the number of Warrant Shares thereby being purchased,
as designated in the Notice of Exercise (the “Aggregate Exercise Price”) by wire transfer or cashier’s
check drawn on a United States bank or pursuant to the cashless exercise procedure specified in Section 2(c) below. Notwithstanding
anything herein to the contrary, the Holder shall not be required to physically surrender this Warrant to the Company until the
Holder has purchased all of the Warrant Shares available hereunder and the Warrant has been exercised in full, in which case, the
Holder shall surrender this Warrant to the Company for cancellation within three (3) Trading Days of the date the final Notice
of Exercise is delivered to the Company. Partial exercises of this Warrant resulting in purchases of a portion of the total number
of Warrant Shares available hereunder shall have the effect of lowering the outstanding number of Warrant Shares purchasable hereunder
in an amount equal to the applicable number of Warrant Shares purchased. The Holder and the Company shall maintain records showing
the number of Warrant Shares purchased and the date of such purchases. The Company shall deliver any objection to any Notice of
Exercise Form within two (2) Business Days of receipt of such notice. The Holder and any assignee, by acceptance of this Warrant,
acknowledge and agree that, by reason of the provisions of this paragraph, following the purchase of a portion of the Warrant Shares
hereunder, the number of Warrant Shares available for purchase hereunder at any given time may be less than the amount stated on
the face hereof.

 

b)                 
Exercise Price. The exercise price per share of the Common Stock under this Warrant shall be $0.2745, subject to
adjustment hereunder (the “Exercise Price”).

 

c)                 
Cashless Exercise. In lieu of payment of the Aggregate Exercise Price, at the option of the Holder, this Warrant
may also be exercised, in whole or in part, at such time by means of a “cashless exercise” in which the Holder shall
be entitled to receive a certificate for the number of Warrant Shares equal to the quotient obtained by dividing [(A-B) (X)] by
(A), where:

 

(A) =  the
VWAP on the Trading Day immediately preceding the date on which Holder elects to exercise this Warrant by means of a “cashless
exercise,” as set forth in the applicable Notice of Exercise;

 

(B) =  the
Exercise Price of this Warrant, as adjusted hereunder; and

 

(X) =
 the number of Warrant Shares that would be issuable upon exercise of this Warrant in accordance with the terms of this Warrant
if such exercise were by means of a cash exercise rather than a cashless exercise.

 

    	2

    	 

    
 

“VWAP”
means, for any date, the price determined by the first of the following clauses that applies: (a) if the Common Stock is then listed
or quoted on a Trading Market, the daily volume weighted average price of the Common Stock for such date (or the nearest preceding
date) on the Trading Market on which the Common Stock is then listed or quoted as reported by Bloomberg L.P. (based on a Trading
Day from 9:30 a.m. (New York City time) to 4:02 p.m. (New York City time), (b)  if the Common Stock is not then listed or
quoted for trading on a Trading Market and if prices for the Common Stock are then reported in the “Pink Sheets” published
by Pink OTC Markets, Inc. (or a similar organization or agency succeeding to its functions of reporting prices), the most recent
bid price per share of the Common Stock so reported, or (c) in all other cases, the fair market value of a share of Common
Stock as determined by an independent appraiser selected in good faith by the Company and reasonably acceptable to the Holders
of a majority in interest of the Securities then outstanding, the fees and expenses of which shall be paid by the Company.

 

“Trading
Day” means a day on which the principal Trading Market is open for trading.

 

“Trading
Market” means any of the following markets or exchanges on which the Common Stock is listed or quoted for trading on
the date in question: the NYSE MKT, the NASDAQ Capital Market, the NASDAQ Global Market, the NASDAQ Global Select Market, the New
York Stock Exchange, the OTCQB or the OTC Bulletin Board (or any successors to any of the foregoing).

 

d)                
Mechanics of Exercise.

 

		 	i.       Delivery of Certificates Upon Exercise. Certificates for shares purchased hereunder shall be transmitted by the Transfer
Agent to the Holder by crediting the account of the Holder’s prime broker with the Depository Trust Company through its Deposit
Withdrawal Agent Commission (“DWAC”) system if the Company is then a participant in such system and the Holder
is not an affiliate of the Company and either (A) there is an effective Registration Statement permitting the resale of the Warrant
Shares by Holder or (B) this Warrant is being exercised via cashless exercise at least six months following the Initial Exercise
Date, and otherwise by physical delivery to the address specified by the Holder in the Notice of Exercise by the date that is three
(3) Trading Days after the latest of (A) the delivery to the Company of the Notice of Exercise Form, (B) surrender of this Warrant
(if required) and (C) payment of the Aggregate Exercise Price as set forth above (including by cashless exercise). This Warrant
shall be deemed to have been exercised on the first date on which all of the foregoing have been delivered to the Company. The
Warrant Shares shall be deemed to have been issued, and Holder or any other person so designated to be named therein shall be deemed
to have become a holder of record of such shares for all purposes, as of the date the Warrant has been exercised, with payment
to the Company of the Exercise Price (or by cashless exercise) and all taxes required to be paid by the Holder, if any, pursuant
to Section 2(d)(iv) prior to the issuance of such shares, having been paid.

 

    	3

    	 

    
 

		 	ii.      Delivery of New Warrants Upon Exercise. If this Warrant shall have been exercised in part, the Company shall, at
the request of a Holder and upon surrender of this Warrant certificate, at the time of delivery of the certificate or certificates
representing Warrant Shares, deliver to Holder a new Warrant evidencing the rights of Holder to purchase the unpurchased Warrant
Shares called for by this Warrant, which new Warrant shall in all other respects be identical with this Warrant.

 

		 	iii.     No Fractional Shares or Scrip. No fractional shares or scrip representing fractional shares shall be issued upon
the exercise of this Warrant. As to any fraction of a share which the Holder would otherwise be entitled to purchase upon such
exercise, the Company shall, at its election, either pay a cash adjustment in respect of such final fraction in an amount equal
to such fraction multiplied by the Exercise Price or round up to the next whole share.

 

		 	iv.     Charges, Taxes and Expenses. Issuance of certificates for Warrant Shares shall be made without charge to the Holder
for any issue or transfer tax or other incidental expense in respect of the issuance of such certificate, all of which taxes and
expenses shall be paid by the Company, and such certificates shall be issued in the name of the Holder or in such name or names
as may be directed by the Holder; provided, however, that in the event certificates for Warrant Shares are to be
issued in a name other than the name of the Holder, this Warrant when surrendered for exercise shall be accompanied by the Assignment
Form attached hereto duly executed by the Holder and the Company may require, as a condition thereto, the payment of a sum sufficient
to reimburse it for any transfer tax incidental thereto.

 

		 	v.      Closing of Books. The Company will not close its stockholder books or records in any manner which prevents the timely
exercise of this Warrant, pursuant to the terms hereof.

 

Section 3.Certain
Adjustments.

 

a)                 
Stock Dividends and Splits. In case of: (i) any subdivision or combination of the Common Stock or (ii) any declaration
or payment, without consideration, of any dividend on the Common Stock payable in shares of the Company’s capital stock or
in any right to acquire shares of its capital stock without consideration, the number of shares of Common Stock or other security
issuable upon exercise hereof shall be proportionately increased or decreased, as appropriate, and the Exercise Price shall be
proportionately adjusted such that the Aggregate Exercise Price of this Warrant shall remain unchanged. Any adjustment made pursuant
to this Section 3(a) shall become effective immediately after the record date for the determination of stockholders entitled to
receive such dividend or distribution and shall become effective immediately after the effective date in the case of a subdivision
or combination.

 

    	4

    	 

    
 

b)                 
Reclassification. In case of any reclassification of or similar change in the Common Stock, the Company shall execute
a new Warrant having substantially similar terms and providing that the holder of this Warrant shall have the right to exercise
such new Warrant for the kind and number of shares of stock, other securities, money or property receivable upon such reclassification
or change by holders of the Common Stock.

 

c)                 
Fundamental Transaction. If, at any time while this Warrant is outstanding, (i) the Company, directly or indirectly,
in one or more related transactions effects any merger or consolidation of the Company with or into another Person and the Company
is not the surviving corporation, (ii) the Company, directly or indirectly, effects any sale, lease, license, assignment, transfer,
conveyance or other disposition of all or substantially all of its assets in one or a series of related transactions, (iii) any,
direct or indirect, purchase offer, tender offer or exchange offer (whether by the Company or another Person) is completed pursuant
to which holders of Common Stock are permitted to sell, tender or exchange their shares for other securities, cash or property
and has been accepted by the holders of 50% or more of the outstanding Common Stock, (iv) the Company, directly or indirectly,
in one or more related transactions effects any reclassification, reorganization or recapitalization of the Common Stock or any
compulsory share exchange pursuant to which the Common Stock is effectively converted into or exchanged for other securities, cash
or property, (v) the Company, directly or indirectly, in one or more related transactions consummates a stock or share purchase
agreement or other business combination (including, without limitation, a reorganization, recapitalization, spin-off or scheme
of arrangement) with another Person whereby such other Person acquires more than 50% of the outstanding shares of Common Stock
(not including any shares of Common Stock held by the other Person or other Persons making or party to, or associated or affiliated
with the other Persons making or party to, such stock or share purchase agreement or other business combination) (each a “Fundamental
Transaction”), then, upon any subsequent exercise of this Warrant, the Holder shall have the right to receive, for each
Warrant Share that would have been issuable upon such exercise immediately prior to the occurrence of such Fundamental Transaction,
at the option of the Holder (without regard to any limitation in Section 2(e) on the exercise of this Warrant), the number of shares
of Common Stock of the successor or acquiring corporation or of the Company, if it is the surviving corporation, and any additional
consideration (the “Alternate Consideration”) receivable as a result of such Fundamental Transaction by a holder
of the number of shares of Common Stock for which this Warrant is exercisable immediately prior to such Fundamental Transaction.
For purposes of any such exercise, the determination of the Exercise Price shall be appropriately adjusted to apply to such Alternate
Consideration based on the amount of Alternate Consideration issuable in respect of one share of Common Stock in such Fundamental
Transaction, and the Company shall apportion the Exercise Price among the Alternate Consideration in a reasonable manner reflecting
the relative value of any different components of the Alternate Consideration. If holders of Common Stock are given any choice
as to the securities, cash or property to be received in a Fundamental Transaction, then the Holder shall be given the same choice
as to the 

 

 

    	5

    	 

    

Alternate Consideration it receives upon any exercise of this Warrant following such Fundamental Transaction. The Company shall
cause any successor entity in a Fundamental Transaction in which the Company is not the survivor (the “Successor Entity”)
to assume all of the obligations of the Company under this Warrant in accordance with the provisions of this Section 3(e) prior
to such Fundamental Transaction and shall, at the option of the holder of this Warrant, deliver to the Holder in exchange for
this Warrant a security of the Successor Entity evidenced by a written instrument substantially similar in form and substance
to this Warrant which is exercisable for a corresponding number of shares of capital stock of such Successor Entity (or its parent
entity) equivalent to the shares of Common Stock acquirable and receivable upon exercise of this Warrant prior to such Fundamental
Transaction, and with an exercise price which applies the exercise price hereunder to such shares of capital stock (but taking
into account the relative value of the shares of Common Stock pursuant to such Fundamental Transaction and the value of such shares
of capital stock, such number of shares of capital stock and such exercise price being for the purpose of protecting the economic
value of this Warrant immediately prior to the consummation of such Fundamental Transaction), and which is reasonably satisfactory
in form and substance to the Holder. Upon the occurrence of any such Fundamental Transaction, the Successor Entity shall succeed
to, and be substituted for (so that from and after the date of such Fundamental Transaction, the provisions of this Warrant and
the other Transaction Documents referring to the “Company” shall refer instead to the Successor Entity), and may exercise
every right and power of the Company and shall assume all of the obligations of the Company under this Warrant with the same effect
as if such Successor Entity had been named as the Company herein. “Person” shall mean an individual or corporation,
partnership, trust, incorporated or unincorporated association, joint venture, limited liability company, joint stock company,
government (or an agency or subdivision thereof) or other entity of any kind

 

d)                
Calculations. All calculations under this Section 3 shall be made to the nearest cent or the nearest 1/100th of a
share, as the case may be. For purposes of this Section 3, the number of shares of Common Stock deemed to be issued and outstanding
as of a given date shall be the sum of the number of shares of Common Stock (excluding treasury shares, if any) issued and outstanding.

 

e)                 
Notice to Holder.

 

		 	i.           
Adjustment. Whenever the Exercise Price or the number of shares of Common Stock issuable upon exercise is adjusted
pursuant to any provision of this Section 3, the Company shall promptly mail to the Holder a notice setting forth the Exercise
Price after such adjustment and setting forth a brief statement of the facts requiring such adjustment.

 

    	6

    	 

    
 

		 	ii.           
Notice to Allow Exercise by Holder. If during the term during which this Warrant may be exercised (A) the Company
shall declare a dividend (or any other distribution in whatever form) on the Common Stock, (B) the Company shall declare a special
nonrecurring cash dividend on or a redemption of the Common Stock, (C) the Company shall authorize the granting to all holders
of the Common Stock rights or warrants to subscribe for or purchase any shares of capital stock of any class or of any rights,
(D) the approval of any stockholders of the Company shall be required in connection with any consolidation or merger to which the
Company is a party, any sale or transfer of all or substantially all of the assets of the Company, or any compulsory share exchange
whereby the Common Stock is converted into other securities, cash or property, or (E) the Company shall authorize the voluntary
or involuntary dissolution, liquidation or winding up of the affairs of the Company, then, in each case, the Company shall cause
to be mailed to the Holder at its last address as it shall appear upon the Warrant Register (as defined below) of the Company,
at least 10 calendar days prior to the applicable record or effective date hereinafter specified, a notice stating (x) the date
on which a record is to be taken for the purpose of such dividend, distribution, redemption, rights or warrants, or if a record
is not to be taken, the date as of which the holders of the Common Stock of record to be entitled to such dividend, distributions,
redemption, rights or warrants are to be determined or (y) the date on which such consolidation, merger, sale, transfer or share
exchange is expected to become effective or close, and the date as of which it is expected that holders of the Common Stock of
record shall be entitled to exchange their shares of the Common Stock for securities, cash or other property deliverable upon such
reclassification, consolidation, merger, sale, transfer or share exchange; provided that the failure to mail such notice or any
defect therein or in the mailing thereof shall not affect the validity of the corporate action required to be specified in such
notice. To the extent that any notice provided hereunder constitutes, or contains, material, non-public information regarding the
Company or any of the subsidiaries of the Company, the Company shall simultaneously file such notice with the SEC pursuant to a
Current Report on Form 8-K. The Holder shall remain entitled to exercise this Warrant during the period commencing on the date
of such notice to the effective date of the event triggering such notice except as may otherwise be expressly set forth herein.

 

Section 4.Transfer
of Warrant.

 

a)                 
Transferability. Subject to compliance with any applicable securities laws and the conditions set forth in Section
4(d) hereof and to the provisions of Section 5 of the Purchase Agreement, this Warrant and all rights hereunder (including, without
limitation, any registration rights) are transferable, in whole or in part, upon surrender of this Warrant at the principal office
of the Company or its designated agent, together with a written assignment of this Warrant substantially in the form of the Assignment
Form attached hereto duly executed by the Holder or its agent or attorney and funds sufficient to pay any transfer taxes payable
upon the making of such transfer. Upon such surrender and, if required, such payment, the Company shall execute and deliver a new
Warrant or Warrants in the name of the assignee or assignees, as applicable, and in the denomination or denominations specified
in such instrument of assignment, and shall issue to the assignor a new Warrant evidencing the portion of this Warrant not so assigned,
and this Warrant shall promptly be cancelled. The Warrant, if properly assigned in accordance herewith, may be exercised by a new
holder for the purchase of Warrant Shares without having a new Warrant issued.

 

    	7

    	 

    
 

b)                 
New Warrants. This Warrant may be divided or combined with other Warrants upon presentation hereof at the aforesaid
office of the Company, together with a written notice specifying the names and denominations in which new Warrants are to be issued,
signed by the Holder or its agent or attorney. Subject to compliance with Section 4(a), as to any transfer which may be involved
in such division or combination, the Company shall execute and deliver a new Warrant or Warrants in exchange for the Warrant or
Warrants to be divided or combined in accordance with such notice. All Warrants issued on transfers or exchanges shall be dated
the initial issuance date set forth on the first page of this Warrant and shall be identical with this Warrant except as to the
number of Warrant Shares issuable pursuant thereto.

 

c)                 
Warrant Register. The Company shall register this Warrant, upon records to be maintained by the Company for that
purpose (the “Warrant Register”), in the name of the record Holder hereof from time to time. The Company may
deem and treat the registered Holder of this Warrant as the absolute owner hereof for the purpose of any exercise hereof or any
distribution to the Holder, and for all other purposes, absent actual notice to the contrary.

 

d)                
Transfer Restrictions. If, at the time of the surrender of this Warrant in connection
with any transfer of this Warrant, the transfer of this Warrant shall not be either (i) registered pursuant to an effective registration
statement under the Securities Act and under applicable state securities or blue sky laws or (ii) eligible for resale without volume
or manner-of-sale restrictions or current public information requirements pursuant to Rule 144, the Company may require, as a condition
of allowing such transfer, that the Holder or transferee of this Warrant, as the case may be, comply with the provisions of Section
9(h) of the Purchase Agreement.

 

e)                 
Representation by the Holder. The Holder, by the acceptance hereof, represents and warrants that it is acquiring
this Warrant and, upon any exercise hereof, will acquire the Warrant Shares issuable upon such exercise, for its own account and
not with a view to or for distributing or reselling such Warrant Shares or any part thereof in violation of the Securities Act
or any applicable state securities law, except pursuant to sales registered or exempted under the Securities Act.

 

Section 5.Miscellaneous.

 

a)                 
No Rights as Stockholder Until Exercise. This Warrant does not entitle the Holder to any voting rights, dividends
or other rights as a stockholder of the Company prior to the exercise hereof as set forth in Section 2(d)(i).

 

b)                 
Loss, Theft, Destruction or Mutilation of Warrant. The Company covenants that upon receipt by the Company of evidence
reasonably satisfactory to it of the loss, theft, destruction or mutilation of this Warrant or any stock certificate relating to
the Warrant Shares, and in case of loss, theft or destruction, of indemnity or security reasonably satisfactory to it (which, in
the case of the Warrant, shall not include the posting of any bond), and upon surrender and cancellation of such Warrant or stock
certificate, if mutilated, the Company will make and deliver a new Warrant or stock certificate of like tenor and dated as of such
cancellation, in lieu of such Warrant or stock certificate.

 

    	8

    	 

    
 

c)                 
Saturdays, Sundays, Holidays, etc. If the last or appointed day for the taking of any action or the expiration of
any right required or granted herein shall not be a Business Day, then, such action may be taken or such right may be exercised
on the next succeeding Business Day.

 

d)                
Authorized Shares. The Company covenants that, during the period the Warrant is outstanding, it will reserve from
its authorized and unissued Common Stock a sufficient number of shares to provide for the issuance of the Warrant Shares upon the
exercise of any purchase rights under this Warrant. The Company further covenants that its issuance of this Warrant shall constitute
full authority to its officers who are charged with the duty of executing stock certificates to execute and issue the necessary
certificates for the Warrant Shares upon the exercise of the purchase rights under this Warrant. The Company will take all such
reasonable action as may be necessary to assure that such Warrant Shares may be issued as provided herein without violation of
any applicable law or regulation, or of any requirements of the Trading Market upon which the Common Stock may be listed. The Company
covenants that all Warrant Shares which may be issued upon the exercise of the purchase rights represented by this Warrant will,
upon exercise of the purchase rights represented by this Warrant and payment for such Warrant Shares in accordance herewith, be
duly authorized, validly issued, fully paid and nonassessable and free from all taxes, liens and charges created by the Company
in respect of the issue thereof (other than taxes in respect of any transfer occurring contemporaneously with such issue).

 

e)                 
No Impairment. Except and to the extent as waived or consented to by the Holder, the Company shall not by any action,
including, without limitation, amending its certificate of incorporation or through any reorganization, transfer of assets, consolidation,
merger, dissolution, issue or sale of securities or any other voluntary action, avoid or seek to avoid the observance or performance
of any of the terms of this Warrant, but will at all times in good faith assist in the carrying out of all such terms and in the
taking of all such actions as may be necessary or appropriate to protect the rights of Holder as set forth in this Warrant against
impairment.

 

f)                  
Jurisdiction. All questions concerning the construction, validity, enforcement and interpretation of this Warrant
shall be determined in accordance with the provisions of the Purchase Agreement.

 

g)                 
Nonwaiver and Expenses. No course of dealing or any delay or failure to exercise any right hereunder on the part
of Holder shall operate as a waiver of such right or otherwise prejudice Holder’s rights, powers or remedies. If the Company
willfully and knowingly fails to comply with any provision of this Warrant, which results in any material damages to the Holder,
the Company shall pay to Holder such amounts as shall be sufficient to cover any costs and expenses including, but not limited
to, reasonable attorneys’ fees, including those of appellate proceedings, incurred by Holder in collecting any amounts due
pursuant hereto or in otherwise enforcing any of its rights, powers or remedies hereunder.

 

    	9

    	 

    
 

h)                 
Notices. Any notice, request or other document required or permitted to be given or delivered to the Holder by the
Company shall be delivered in accordance with the notice provisions of the Purchase Agreement.

 

i)                   
Limitation of Liability. No provision hereof and no enumeration herein of the rights or privileges of Holder, shall
give rise to any liability of Holder for the purchase price of any Common Stock or as a stockholder of the Company, whether such
liability is asserted by the Company or by creditors of the Company.

 

j)                   
Remedies. The Holder, in addition to being entitled to exercise all rights granted by law, including recovery of
damages, will be entitled to seek specific performance of its rights under this Warrant. The Company agrees that monetary damages
would not be adequate compensation for any loss incurred by reason of a breach by it of the provisions of this Warrant and hereby
agrees to waive and not to assert the defense in any action for specific performance that a remedy at law would be adequate.

 

k)                 
Successors and Assigns. Subject to applicable securities laws, this Warrant and the rights and obligations evidenced
hereby shall inure to the benefit of and be binding upon the successors and permitted assigns of the Company and the successors
and permitted assigns of Holder. The provisions of this Warrant are intended to be for the benefit of any Holder from time to time
of this Warrant and shall be enforceable by the Holder or holder of Warrant Shares.

 

l)                   
Amendment. This Warrant may be modified or amended or the provisions hereof waived with the written consent of the
Company and the Holder.

 

m)               
Severability. Wherever possible, each provision of this Warrant shall be interpreted in such manner as to be effective
and valid under applicable law, but if any provision of this Warrant shall be prohibited by or invalid under applicable law, such
provision shall be ineffective to the extent of such prohibition or invalidity, without invalidating the remainder of such provisions
or the remaining provisions of this Warrant.

 

n)                 
Headings. The headings used in this Warrant are for the convenience of reference only and shall not, for any purpose,
be deemed a part of this Warrant.

 

********************

 

(Signature Pages Follow)

 

    	10

    	 

    
 

 

IN WITNESS WHEREOF, the
Company has caused this Warrant to be executed by its officer thereunto duly authorized as of the date first above indicated.

 

 

 

	
        Interleukin Genetics,
        Inc.

         

         

	
        By:__________________________________________

        Name: Kenneth S. Kornman

        Title: Chief Executive Officer

         

	 

 

    	11

    	 

    

 

NOTICE OF EXERCISE

 

To:Interleukin
Genetics, Inc.

 

(1)  
The undersigned hereby elects to purchase ________ Warrant Shares of the Company pursuant to the terms of the attached Warrant
(only if exercised in full), and tenders herewith payment of the exercise price for said Warrant Shares in full, together with
all applicable transfer taxes, if any.

 

(2)  
Payment shall take the form of (check applicable box):

 

[ ] in lawful
money of the United States; or

 

[ ] the cancellation
of such number of Warrant Shares as is necessary, in accordance with the formula set forth in subsection 2(c), to exercise this
Warrant with respect to the maximum number of Warrant Shares purchasable pursuant to the cashless exercise procedure set forth
in subsection 2(c).

 

(3)  
Please issue a certificate or certificates representing said Warrant Shares in the name of the undersigned or in such other
name as is specified below:

 

	 	 	 

 

 

The Warrant Shares shall be delivered to
the following DWAC Account Number or by physical delivery of a certificate to:

 

	 	 	 
	 	 	 
	 	 	 
	 	 	 
	 	 	 

 

 

[SIGNATURE
OF HOLDER]

 

Name of Holder: ________________________________________________________________________

Signature of Authorized Signatory of
Holder: _________________________________________________

Name of Authorized Signatory: ___________________________________________________________________

Title of Authorized Signatory: ____________________________________________________________________

Date: ________________________________________________________________________________________

 

 

 

    	 

    	 

    

 

 

ASSIGNMENT FORM

 

(To assign the foregoing warrant, execute

this form and supply required information.

Do not use this form to exercise the warrant.)

 

 

 

FOR VALUE RECEIVED, [____]
all of or [_______] shares of the foregoing Warrant and all rights evidenced thereby are hereby assigned to

 

________________________________________________________________________
whose address is

 

______________________________________________________________________________________.

  

 

_______________________________________________________________________________________

 

Dated: ______________,
_______

 

 

	 	Holder’s Signature:	 	 
	 	 	 	 
	 	Holder’s Address:	 	 
	 	 	 	 
	 	 	 	 

  

Signature Guaranteed: ___________________________________________________________________

 

  

NOTE: The signature to this Assignment
Form must correspond with the name as it appears on the face of the Warrant, without alteration or enlargement or any change whatsoever,
and must be guaranteed by a bank or trust company. Officers of corporations and those acting in a fiduciary or other representative
capacity should file proper evidence of authority to assign the foregoing Warrant.

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