Exhibit 10.13

PROMISSORY NOTE



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|Principal                                                                                                                                   |  | Loan Date  |  | Maturity   |  | Loan No |  | Call / Coll |  | Account |  | Officer |  | Initials
|$ 3,500,000.00                                                                                                                              |  | 10-01-2007 |  | 04-06-2008 |  | 91120   |  | 401         |  |         |  | 307     |  | LOGO    
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|References in the boxes above are for Lenders use only and do not limit the applicability of this document to any particular loan or item.
|Any item above containing * * * has been omitted due to text length limitations.                                                         



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|Borrower: |  | GEOPHARMA, INC. (TIN: 59-3702070) 6950 BRYAN DAIRY RD LARGO, FL 33777 |  | Lender: |  | First Community Bank of America St. Petersburg Office 6100 4th Street North St. Petersburg, FL 33703 (727) 520-8837







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|---------------------------------- |  | ------------------------ |  | --------------------------------
|Principal Amount:    $3,500,000.00 |  | Interest Rate:    7.350% |  | Date of Note:    October 1, 2007

PROMISE TO PAY. GEOPHARMA, INC. (Borrower) promises to pay to First Community Bank of America
(Lender), or order, in lawful money of the United States of America, the principal amount of Three Million Five Hundred Thousand & 00/100 Dollars ($3,500,000.00), together with interest at the rate of 7.350% per annum on
the unpaid principal balance from October 1, 2007, until paid in full. The interest rate may change under the terms and conditions of the INTEREST AFTER DEFAULT section.

PAYMENT. Borrower will pay this loan in one principal payment of $3,500,000.00 plus interest on April 6, 2008. This payment due on April 6, 2008, will be for all principal and all accrued interest not yet
paid. In addition, Borrower will pay regular monthly payments of all accrued unpaid interest due as of each payment date, beginning November 6, 2007, with all subsequent interest payments to be due on the same day of each month after that.
Unless otherwise agreed or required by applicable law, payments will be applied first to any accrued unpaid interest; then to principal; then to any late charges; and then to any unpaid collection costs. The annual interest rate for this Note is
computed on a 365/360 basis; that is, by applying the ratio of the annual interest rate over a year of 360 days, multiplied by the outstanding principal balance, multiplied by the actual number of days the principal balance is outstanding. Borrower
will pay Lender at Lenders address shown above or at such other place as Lender may designate in writing.

PREPAYMENT. Borrower may pay without
penalty all or a portion of the amount owed earlier than it is due. Early payments will not, unless agreed to by Lender in writing, relieve Borrower of Borrowers obligation to continue to make payments under the payment schedule. Rather, early
payments will reduce the principal balance due. Borrower agrees not to send Lender payments marked paid in full, without recourse, or similar language. If Borrower sends such a payment, Lender may accept it without losing any
of Lenders rights under this Note, and Borrower will remain obligated to pay any further amount owed to Lender. All written communications concerning disputed amounts, including any check or other payment instrument that indicates that the
payment constitutes payment in full of the amount owed or that is tendered with other conditions or limitations or as full satisfaction of a disputed amount must be mailed or delivered to: First Community Bank of America, Loan Operations
Center, 7441 114th Avenue North Largo, FL 33777.

LATE CHARGE. If a payment is 10 days or more late, Borrower will be charged 5.000% of the unpaid portion
of the regularly scheduled payment or $5.00, whichever is greater.

INTEREST AFTER DEFAULT. Upon default, including failure to pay upon final maturity, the
interest rate on this Note shall be increased to 18.000% per annum. However, in no event will the interest rate exceed the maximum interest rate limitations under applicable law.

DEFAULT. Each of the following shall constitute an event of default (Event of Default) under this Note:

Payment Default. Borrower fails to make any payment when due under this Note.

Other Defaults. Borrower fails to comply with or to
perform any other term, obligation, covenant or condition contained in this Note or in any of the related documents or to comply with or to perform any term, obligation, covenant or condition contained in any other agreement between Lender and
Borrower.

Default in Favor of Third Parties. Borrower or any Grantor defaults under any loan, extension of credit, security agreement,
purchase or sales agreement, or any other agreement, in favor of any other creditor or person that may materially affect any of Borrowers property or Borrowers ability to repay this Note or perform Borrowers obligations under this
Note or any of the related documents.

False Statements. Any warranty, representation or statement made or furnished to Lender by Borrower
or on Borrowers behalf under this Note or the related documents is false or misleading in any material respect, either now or at the time made or furnished or becomes false or misleading at any time thereafter.

Insolvency. The dissolution or termination of Borrowers existence as a going business, the insolvency of Borrower, the appointment of a receiver for
any part of Borrowers property, any assignment for the benefit of creditors, any type of creditor workout, or the commencement of any proceeding under any bankruptcy or insolvency laws by or against Borrower.

Creditor or Forfeiture Proceedings. Commencement of foreclosure or forfeiture proceedings, whether by judicial proceeding, self-help, repossession or any
other method, by any creditor of Borrower or by any governmental agency against any collateral securing the loan. This includes a garnishment of any of Borrowers accounts, including deposit accounts, with Lender. However, this Event of Default
shall not apply if there is a good faith dispute by Borrower as to the validity or reasonableness of the claim which is the basis of the creditor or forfeiture proceeding and if Borrower gives Lender written notice of the creditor or forfeiture
proceeding and deposits with Lender monies or a surety bond for the creditor or forfeiture proceeding, in an amount determined by Lender, in its sole discretion, as being an adequate reserve or bond for the dispute.

Events Affecting Guarantor. Any of the preceding events occurs with respect to any guarantor, endorser, surety, or accommodation party of any of the
indebtedness or any guarantor, endorser, surety, or accommodation party dies or becomes incompetent, or revokes or disputes the validity of, or liability under, any guaranty of the indebtedness evidenced by this Note. In the event of a death,
Lender, at its option, may, but shall not be required to, permit the guarantors estate to assume unconditionally the obligations arising under the guaranty in a manner satisfactory to Lender, and, in doing so, cure any Event of Default.

Change In Ownership. Any change in ownership of twenty-five percent (25%) or more of the common stock of Borrower.

Adverse Change. A material adverse change occurs in Borrowers financial condition, or Lender believes the prospect of payment or performance of this
Note is impaired.

Insecurity. Lender in good faith believes itself insecure.

Cure Provisions. If any default, other than a default in payment is curable and if Borrower has not been given a notice of a breach of the same provision
of this Note within the preceding twelve (12) months, it may be cured if Borrower, after receiving written notice from Lender demanding cure of such default: (1) cures the default within fifteen (15) days; or (2) if the cure
requires more than fifteen (15) days, immediately initiates steps which Lender deems in Lenders sole discretion to be sufficient to cure the default and thereafter continues and completes all reasonable and necessary steps sufficient to
produce compliance as soon as reasonably practical.

LENDERS RIGHTS. Upon default, Lender may declare the entire unpaid principal balance under this
Note and all accrued unpaid interest immediately due, and then Borrower will pay that amount.

ATTORNEYS FEES; EXPENSES. Lender may hire or pay
someone else to help collect this Note if Borrower does not pay. Borrower will pay Lender the amount of these costs and expenses, which includes, subject to any limits under applicable law, Lenders reasonable attorneys fees and
Lenders legal expenses whether or not there is a lawsuit, including reasonable attorneys fees and legal expenses for bankruptcy proceedings (including efforts to modify or vacate any automatic stay or injunction), and appeals. If not
prohibited by applicable law, Borrower also will pay any court costs, in addition to all other sums provided by law.

JURY WAIVER. Lender and Borrower
hereby waive the right to any jury trial in any action, proceeding, or counterclaim brought by either Lender or Borrower against the other.

GOVERNING LAW.
This Note will be governed by federal law applicable to Lender and, to the extent not preempted by federal law, the laws of the State of Florida without regard to its conflicts of law provisions. This Note has been accepted by Lender in the State of
Florida.

CHOICE OF VENUE. If there is a lawsuit, Borrower agrees upon Lenders request to submit to the jurisdiction of the courts of Pinellas
County, State of Florida.

DISHONORED ITEM FEE. Borrower will pay a fee to Lender of $25.00 if Borrower makes a payment on Borrowers loan and the
check or preauthorized charge with which Borrower pays is later dishonored.

RIGHT OF SETOFF. To the extent permitted by applicable law, Lender reserves a
right of setoff in all Borrowers accounts with Lender (whether checking, savings, or some other account). This includes all accounts Borrower holds jointly with someone else and all accounts Borrower may open in the future. However, this does
not include any IRA or Keogh accounts, or any trust accounts for which setoff would be prohibited by law. Borrower authorizes Lender, to the extent permitted by applicable law, to charge or setoff all sums owing on the indebtedness against any and
all such accounts, and, at Lenders option, to administratively freeze all such accounts to allow Lender to protect Lenders charge and setoff rights provided in this paragraph.



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|               |  | PROMISSORY NOTE |  |       
|Loan No: 91120 |  | (Continued)     |  | Page 2







COLLATERAL. Borrower acknowledges this Note is secured by the following collateral described in the security
instrument listed herein: certificates of deposit described in an Assignment of Deposit Account dated October 1, 2007.

SUCCESSOR INTERESTS. The terms
of this Note shall be binding upon Borrower, and upon Borrowers heirs, personal representatives, successors and assigns, and shall inure to the benefit of Lender and its successors and assigns.

NOTIFY US OF INACCURATE INFORMATION WE REPORT TO CONSUMER REPORTING AGENCIES. Please notify us if we report any inaccurate information about your account(s) to a
consumer reporting agency. Your written notice describing the specific inaccuracy(ies) should be sent to us at the following address: First Community Bank of America Loan Operations Center 7441 114th Avenue North Largo, FL 33777.

GENERAL PROVISIONS. If any part of this Note cannot be enforced, this fact will not affect the rest of the Note. Borrower does not agree or intend to pay, and Lender
does not agree or intend to contract for, charge, collect, take, reserve or receive (collectively referred to herein as charge or collect), any amount in the nature of interest or in the nature of a fee for this loan, which would in any
way or event (including demand, prepayment, or acceleration) cause Lender to charge or collect more for this loan than the maximum Lender would be permitted to charge or collect by federal law or the law of the State of Florida (as applicable). Any
such excess interest or unauthorized fee shall, instead of anything stated to the contrary, be applied first to reduce the principal balance of this loan, and when the principal has been paid in full, be refunded to Borrower. Lender may delay or
forgo enforcing any of its rights or remedies under this Note without losing them. Borrower and any other person who signs, guarantees or endorses this Note, to the extent allowed by law, waive presentment, demand for payment, and notice of
dishonor. Upon any change in the terms of this Note, and unless otherwise expressly stated in writing, no party who signs this Note, whether as maker, guarantor, accommodation maker or endorser, shall be released from liability. All such parties
agree that Lender may renew or extend (repeatedly and for any length of time) this loan or release any party or guarantor or collateral; or impair, fail to realize upon or perfect Lenders security interest in the collateral; and take any other
action deemed necessary by Lender without the consent of or notice to anyone. All such parties also agree that Lender may modify this loan without the consent of or notice to anyone other than the party with whom the modification is made. The
obligations under this Note are joint and several.

PRIOR TO SIGNING THIS NOTE, BORROWER READ AND UNDERSTOOD ALL THE PROVISIONS OF THIS NOTE. BORROWER
AGREES TO THE TERMS OF THE NOTE.

BORROWER ACKNOWLEDGES RECEIPT OF A COMPLETED COPY OF THIS PROMISSORY NOTE.



|                |  |                                                          
|--------------- |  | ---------------------------------------------------------
|BORROWER:      
|               
|GEOPHARMA, INC.
|                | 
|By:             |  | LOGO                                                     
|                |  | CAROL DORE-FALCONE, Vice President/CFO of GEOPHARMA, INC.





Florida Documentary Stamp Tax

Florida documentary stamp tax
required by law in the amount of $2,450.00 has been paid or will be paid directly to the Department of Revenue. Certificate of Registration No. 592478050.





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|LASER PRO Lending, Ver. 5.38.10.001 Copr. Harland Financial Solutions. Inc. 1997. 2007. All Rights Reserved.  FL C:\CFI\LPL\D20.FC TR-6717
PR-108