EXHIBIT 4.21
--------------------------------------------------------------------------------


THIS  WARRANT  AND  THE  SHARES  OF  COMMON STOCK WHICH MAY BE ISSUED UPON THEIR
EXERCISE  HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED,
OR  UNDER  THE  SECURITIES  LAWS  OF ANY STATE AND MAY NOT BE OFFERED OR SOLD IN
CONTRAVENTION  OF  THE  SECURITIES  ACT OF 1933, AS AMENDED, OR APPLICABLE STATE
LAWS  OR  THE  RESTRICTIONS  CONTAINED  IN  THIS  WARRANT.

                              WARRANT TO PURCHASE
                  500,000 SHARES OF NEW YORK HEALTH CARE, INC.

     THIS WARRANT CERTIFIES THAT, for value received, CORVAL INTERNATIONAL INC.,
a  Canadian  corporation ("CII"), or registered assigns, is entitled to purchase
--------------------------------
from  NEW YORK HEALTH CARE, INC., a New York corporation (the "Company"), at any
time  after  the date hereof to and including 5:00 p.m. New York time on the one
year  anniversary  of  the  issuance date, Five Hundred Thousand (500,000) fully
paid  and  non-assessable  shares  of the Common Stock, par value $.01 per share
(the  "Common  Stock"),  of  the  Company.

     I.     Method  of  Exercise;  Payment;  Price;  Issuance  of  New  Warrant;
            --------------------------------------------------------------------
Transfer  and  Exchange.  This  Warrant  (the "Warrant") may be exercised by the
-----------------------
holder  hereof,  during any period set forth above, in whole or in part (but not
as  to  a  fractional  share of Common Stock), by the surrender of this Warrant,
together  with  the  exercise form attached hereto as Exhibit "1" (the "Exercise
Form") duly completed and signed, at the principal office of the Company, and by
payment  to  the  Company  of the Warrant Price: (a) in cash, certified check or
wire  transfer;  (b) by delivery to the Company of shares of Common Stock (which
may  include restricted shares); (c) any combination of cash and Common Stock or
(d)  such other consideration as the Company deems appropriate and in compliance
with  applicable  law.  In  the  event  that any shares of Common Stock shall be
transferred to the Company to satisfy all or any part of the purchase price, the
part  of  the  purchase  price deemed to have been satisfied by such transfer of
shares  of Common Stock shall be equal to the product derived by multiplying the
fair market value (i.e., the closing bid price) as of the date of exercise times
the  number  of  shares  of  Common  Stock  transferred  to  the  Company.

     For the purposes of this Warrant, the Warrant may be exercised at the times
and  at  the  prices  (the  "Warrant  Price")  as  follows:

<TABLE>
<CAPTION>
--------------------------------------------------------------------------------------
<S>                                                   <C>
First Tranche: Vested immediately on the effective .  250,000 shares @ $2.50 per share
date of that certain Business Advisory Agreement
between CORVAL INTERNATIONAL INC. and The
Bio Balance Corp., a wholly-owned subsidiary of
New York Health Care, Inc. (the "Effective Date")
----------------------------------------------------  --------------------------------
Second Tranche: Vested 90 days after the Effective .  250,000 shares @ $2.50 per share
Date, but only if the Business Advisory Agreement
has not been terminated on or prior to the 90th day
pursuant to the provisions of paragraph 14 thereof.
--------------------------------------------------------------------------------------
</TABLE>


<PAGE>
     The  Company  agrees  that  the  shares  so purchased shall be deemed to be
issued  to  the holder hereof as the record owner of such shares as of the close
of  business  on  the date on which this Warrant shall have been surrendered and
payment made for such shares as aforesaid shall have been made.  In the event of
any  exercise  of  this  Warrant, certificates for the shares of Common Stock so
purchased shall be delivered to the holder hereof within a reasonable time after
this  Warrant  shall have been so exercised.  Unless this Warrant has expired, a
new  warrant  representing  the right to purchase the number of shares of Common
Stock,  if  any,  with  respect  to  which this Warrant shall not then have been
exercised,  shall  also  be  issued  to  the  holder  hereof  at  such  time.

     This  Warrant  shall  be  transferable  only  on  the  books of the Company
maintained at its principal office upon delivery thereof by the holder or by its
duly authorized attorney or representative, or accompanied by proper evidence of
succession,  assignment  or authority to transfer, together with the form of the
assignment,  attached  hereto  as  Exhibit  "2"  (the  "Assignment  Form")  duly
completed  and  signed.

     2.     Stock  Fully Paid; Reservation of Shares.  The Company covenants and
            ----------------------------------------
agrees  that  all  shares  of  Common Stock shall, upon issuance pursuant to the
exercise  of  this  Warrant  and payment of the Warrant Price, be fully paid and
nonassessable  and  free  from  all  liens  and encumbrances with respect to the
issuance thereof, except for liens and encumbrances which may have been incurred
by  CII  or  the  holder  hereof.  The Company further covenants and agrees that
during  the period within which this Warrant may be exercised, the Company shall
at  all times have authorized and reserved, for the purpose of the issuance upon
exercise  of this Warrant, at least the maximum number of shares of Common Stock
as  are  issuable  upon  the  exercise  of  this  Warrant.

     3.     Adjustment  of  Warrant  Price and Number of Shares of Common Stock.
            ------------------------------------------------------ ------------
The  number and kind of securities purchasable upon the exercise of this Warrant
and  the  Warrant  Price  shall  be  subject  to adjustment from time to time as
follows:

          (a)     If  the  Company  shall  subdivide  its  outstanding shares of
Common  Stock,  then  the  number  of  shares  of  Common Stock purchasable upon
exercise  of  this  Warrant immediately prior thereto, shall be adjusted so that
the  holder  of this Warrant shall be entitled to receive the kind and number of
shares  of  Common  Stock or other securities of the Company which it would have
owned or have been entitled to receive after the occurrence of any of the events
described  above,  had  such  Warrant  been  exercised  immediately prior to the
occurrence  of  such  event  (or  any  record  date  with  respect thereto).  An
adjustment  made  pursuant  to  this  paragraph  (a)  shall  become  effective
immediately  after  the  effective  date  of the event retroactive to the record
date,  if  any,  for  such  event.

          (b)     No  adjustment  in  the  number  of  shares  of  Common  Stock
purchasable  under  this  Warrant  shall be required unless the adjustment would
require  an  increaseWJDWilliam  J.  DavisThis could have the effect of limiting
adjustments  to  only  those  which  "increase" the issuable shares, rather than
decrease  them,  as  in  the  case of a reverse split. I most warrants, the word
"increase"  would  be replaced by the word "adjustment." of at least one percent
in  the  number  of shares of Common Stock purchasable upon the exercise of this
Warrant.  Any adjustments which by reason of this paragraph (b) are not required
to  be  made  shall  be carried forward and taken into account in any subsequent
adjustment.  All  calculations under this Section 3 shall be made to the nearest
onehundredth  of  a  share  or  to  the  nearest  cent,  as  the  case  may  be.

          (c)     Whenever the number of shares of Common Stock purchasable upon
the  exercise of this Warrant is adjusted, the Warrant Price per share of Common
Stock  payable  upon  exercise  of each Warrant shall be adjusted by multiplying
such  Warrant  Price  immediately  prior  to  such adjustment by a fraction, the
numerator  of  which  shall  be  the  number  of  shares  of  Common


<PAGE>
Stock  purchasable  upon  the exercise of each Warrant immediately prior to such
adjustment, and the denominator of which shall be the number of shares of Common
Stock  purchasable  immediately  after  such  adjustment.

          (d)     Whenever the number of shares of Common Stock purchasable upon
the exercise of this Warrant or the Warrant Price of such shares of Common Stock
is  adjusted,  the  Company  shall  promptly  mail  by first class mail, postage
prepaid, to the holder of this Warrant notice of such adjustment or adjustments,
together  with  a certificate setting forth the number of shares of Common Stock
purchasable  upon  the  exercise  of  this  Warrant and the Warrant Price of the
shares  of  Common  Stock  after  the adjustment, a brief statement of the facts
requiring  such  an adjustment, and the computation by which such adjustment was
made.

          (e)     For  the purpose of this Section 3, the term "shares of Common
Stock" means the Common Stock of the Company of the class authorized at the date
of  this  Warrant  and  stock  of  any  other  class  into  which such presently
authorized  shares  of Common Stock may be changed and any other shares of stock
of  the  Company  which do not have priority in the payment of dividends or upon
liquidation  over any other class of stock.  In the event that at any time, as a
result  of  an  adjustment  made pursuant to this Section 3, the holders of this
Warrant  become  entitled  to  purchase  any  shares  of  Common  Stock or other
securities  of  the  Company  other  than shares of Common Stock, thereafter the
number  of such other shares or other securities so purchasable upon exercise of
this  Warrant  and the Warrant Price of such shares or other securities shall be
subject  to  adjustment  from  time  to  time in a manner and on terms as nearly
equivalent as practicable to the provisions with respect to the shares contained
in  this Section 3 and the provisions of this Section 3 and all other applicable
sections  of  this Warrant shall apply on like terms to any such other shares or
securities.

          (f)     Except  as  provided  in  paragraphs  (a)  through  (e),  no
adjustment  for  any dividends, or any distribution or sale of securities, shall
be  made  during  the term of this Warrant or upon the exercise of this Warrant.

          (g)     In case of any capital reorganization, or any reclassification
of the shares of Common Stock of the Company, or in case of the consolidation or
merger  of  the  Company  with or into any other corporation or the sale, lease,
conveyance  or  other  disposition of all or substantially all of the properties
and  assets  of  the  Company  to  any  other  corporation,  the Company or such
successor  or purchasing corporation, as the case may be, shall execute with the
holder of this Warrant an agreement to the effect that this Warrant shall, after
such  capital  reorganization,  reclassification, consolidation, merger or sale,
lease,  conveyance or other disposition, be exercisable into the kind and amount
of shares of stock or other securities or property (including cash) to which the
holder of the number of shares of Common Stock deliverable (immediately prior to
the  happening  of such capital reorganization, reclassification, consolidation,
merger, sale, lease, conveyance or other disposition) upon exercise of a Warrant
would  have  been  entitled upon the happening of such event.  The Company shall
mail  by  first  class  mail,  postage  prepaid, to the holder of this Warrant a
notice  of  any  event  requiring  such  agreement at least 30 days prior to the
effective  date of such event.  Such agreement shall provide for all appropriate
adjustments,  which  shall  be as nearly equivalent as may be practicable to the
adjustments provided for in this Section 3. The provisions of this paragraph (g)
shall  also  apply  to  successive  reorganizations,  reclassifications,
consolidations,  mergers,  sales,  leases,  conveyances  and other dispositions.

          (h)     Irrespective  of  any  adjustments in the Warrant Price or the
number  or  kind  of shares or other securities purchasable upon the exercise of
this  Warrant,  the  Warrant  theretofore  or  thereafter issued may continue to
express  the  same  price  and  number and kind of shares of Common Stock as are
stated  in  this  Warrant.


<PAGE>
          (i)     The  Company  shall not be required to issue fractional shares
of  Common Stock on the exercise of Warrants.  If any fraction of a share would,
except for the provisions of this Section 3, be issuable on the exercise of this
Warrant  (or specified portion thereof), the Company shall pay an amount in cash
equal  to the current market price per share of Common Stock, multiplied by such
fraction.

     4.     Registration  Rights.  This  Warrant shall entitle the holder hereof
            --------------------
to  certain  registration  rights  with  respect  to  the shares of Common Stock
issuable  upon the exercise hereof, in accordance with the terms, and subject to
the  conditions,  of  that  certain  Registration  Rights  Agreement in the form
attached  hereto  as  Exhibit  "3".

     5.     No  Shareholder  Rights.  This  Warrant shall not entitle the holder
            -----------------------
hereof  to  any  voting  rights or other rights as a shareholder of the Company.

     6.     Gender and Number.  As used herein, the use of any of the masculine,
            -----------------
feminine,  or  neuter  gender  and  the  use of singular or plural numbers shall
include  any  or  all  of  the  other,  wherever and whenever appropriate in the
context.

     7.     Notices.  Except  as  otherwise provided herein, any notice pursuant
            -------
to  this Warrant by the Company or any Holder of the Warrant shall be in writing
and  shall  be  deemed to have been duly given when personally delivered or five
days  after  such  notice is mailed by certified mail, return receipt requested,
postage  prepaid  (a)  if to the Company, to The Bio Balance Corp., 16 East 34th
Street,  New  York,  NY  10016, Attention Paul Stark, President, and to New York
Health  Care,  Inc.,  1850  McDonald  Avenue Brooklyn New York 11223, Attention:
Jerry  Braun,  President;  and  (b)  if to the Holder of this Warrant, to Corval
International  Inc.  : Attention Alfred  G. Packer , President, or to such other
address  as  it  may be changed from time to time on the books of the Company by
written  notice.  Copies  of  all notices to the Company shall be simultaneously
given to William J. Davis, Esq., Scheichet& Davis, P.C., 800 Third Avenue - 29th
Floor,  New  York,  NY  10022,  fax  (212)  371-7634,  e-mail
william@scheichetdavis.com.  Each  party hereto may from time to time change the
address to which notices to it are to be delivered or mailed hereunder by notice
in  writing  to  the  other  party.

     8.     Benefits.  Nothing  in the Warrant shall be construed to give to any
            --------
person  or corporation other than the Company and the holder of this Warrant any
legal  or equitable right, remedy, or claim hereunder; but this Warrant shall be
for  the  sole  and  exclusive  benefit  of  the  Company and the holder of this
Warrant.

     9.     Investment.  The  Holder  hereof  covenants  and  agrees  that  this
            ----------
Warrant  has  been  taken  for investment and for its own account and not with a
view  towards resale or distribution within the meaning of the Securities Act of
1933,  as  amended  (the  "Securities  Act").

     10.     Exchange.  This  Warrant is exchangeable, upon the surrender hereof
             --------
by the Holder hereof at the principal office of the Company, for new Warrants of
like tenor representing in the aggregate the right to subscribe for and purchase
the  number  of shares which may be subscribed for and purchased hereunder, each
of  such  new Warrants to represent the right to subscribe for and purchase such
number  of  shares  as  shall be designated by said Holder hereof at the time of
such  surrender.

     11.     Applicable  Law.  This  Warrant  shall be governed by and construed
             ---------------
and enforced


<PAGE>
in  accordance  with  the laws of the State of New York without giving effect to
the choice of law or conflict of laws principles. The New York state and federal
courts in New York shall have jurisdiction over any and all disputes arising out
of  or  relater  to  this  Warrant..

DATED as of April 21, 2003                  NEW YORK HEALTH CARE, INC.


                                            By:
                                               --------------------------------
                                             Name:
                                             Title:


<PAGE>

                                    EXHIBIT 1
                                    ---------

                                  EXERCISE FORM

                    (To be Executed by the Registered Holder
                       to Exercise the Rights to Purchase
                    Common Shares Evidenced by the Warrant)



New York Health Care, Inc.
__________________________
__________________________
Attention:  ______________


     The  undersigned hereby irrevocably subscribes for _________ shares of your
Common Stock pursuant to and in accordance with the terms and conditions of that
certain  Warrant  dated  as  of  April  21,  2003, and herewith makes payment of
$__________  therefor, and requests that a certificate for such shares be issued
in  the  name  of  the  undersigned  and  be delivered to the undersigned at the
address  stated  below.  The  undersigned further requests that if the number of
shares  subscribed  for  herein  shall  not  be  all  of  the shares purchasable
hereunder,  that  a  new  Warrant  of  like  tenor for the balance of the shares
purchasable  hereunder  be  delivered  to  the  undersigned.



                                             Name:______________________________

                                             Signed:____________________________

                                             Address:___________________________
                                             ___________________________________

Dated:_________________________________


<PAGE>
                                    EXHIBIT 2
                                    ---------

                                   ASSIGNMENT



     FOR  VALUE  RECEIVED,  the  undersigned ___________________________________
hereby  sells,  assigns  and  transfers  unto _________________________________,
_______________  of the ____________ Warrants represented by the within Warrant,
together  with  all  rights,  title  and  interest  therein,  and  does  hereby
irrevocably  constitute  and  appoint  the Company the undersigned's attorney to
transfer  said  Warrant  on  the  books  of  such  Company  with  full  power of
substitution  in  the  premises.


Dated: _______________________________,

Name of Existing Warrant Holder:________________________________________________

Social Security or Federal Tax ID Number:_______________________________________

Address:________________________________________________________________________

Signature:______________________________________________________________________


Name of New Warrant Holder:_____________________________________________________

Social Security or Federal Tax ID Number:_______________________________________

Address:________________________________________________________________________

Signature:______________________________________________________________________


(A qualified Medallion Guarantee of the transferor's signature must appear
below)


<PAGE>
                                    EXHIBIT 3
                                    ---------

                          REGISTRATION RIGHTS AGREEMENT

     THIS  REGISTRATION  RIGHTS  AGREEMENT  (the "Agreement"), dated as of April
                                                  ---------
___,  2003,  by  and  between New York Health Care, Inc., a New York corporation
with  its  principal  offices  in  New  York,  NY  (the  "Company"),  and CORVAL
                                                          -------
INTERNATIONAL INC a Canadian corporation with its registered offices in Montreal
Canada  ("CII").

     The  parties  hereto,  for good and valuable consideration, the receipt and
sufficiency of which are hereby acknowledged, and intending to be legally bound,
hereby  agree  as  follows:

     1.     DEFINITIONS.  The  following  terms  have  the  following  meanings:

          (a)     "Act"  means  the U.S. Securities Act of 1933, as amended, and
                   ---
the  rules  and  regulations  promulgated  thereunder.

          (b)     "Commission"  means  the  Securities  and Exchange Commission.
                   ----------

          (c)     "Common  Stock"  means  the  Common Stock, par value $0.01 per
                   -------------
share,  of  the  Company.

          (d)     "Registrable  Securities" means any Warrant Shares (as defined
                   -----------------------
herein),  of  the  Company  owned  by  CII  or  its  assigns  .

          (e)     "Registration," "register" and like words mean compliance with
                   ------------    --------
all  of  the  laws,  rules  and  regulations  (federal,  state  and  local), and
provisions  of  agreements  and  corporate  documents  pertaining  to the public
offering  of  securities,  including  registration  of  any  public  offering of
securities  on  any  form  under  the  Act.

          (f)     "Warrant  Shares"  means  any  shares  of  Common Stock of the
                   ---------------
Company  received  by  CII  in  connection with the exercise of the Common Stock
Purchase  Warrant  (the "Warrant") of even date herewith given by the Company to
                         -------
CII  or  any  new  warrant  given  to CII pursuant to the terms of such warrant.

     2.     (a)  PIGGYBACK  REGISTRATION.  At any time following the date hereof
and  prior  to the Registration of all of the Warrant Shares, and subject to the
other  provisions  of  this  Agreement,  the Company shall advise CII by written
notice  at least ten (10) days prior to the filing of any registration statement
under  the  Act by the Company (other than a registration statement on Form S-4,
Form  S-8  or  subsequent similar forms), and will upon the provision of written
notice  from  CII  as described below include in any such registration statement
such  information  as  may  be  required  to  permit  a  public  offering of the
Registrable Securities desired to be registered by  CII.  If CII desires to have
its  Registrable  Securities included in such registration statement, it must so
advise  the Company in writing within five (5) days after the date of receipt of
the  Company's  notice  of registration, setting forth the amount of Registrable
Securities  for  which registration is requested; provided, however, that if the
sole  underwriter or managing underwriters advise the Company that the inclusion
in  the offering of securities proposed to be sold by CII would adversely affect
the ability of the Company to complete the offering, then the Company shall have
the  right  to reduce the number of shares for which CII is seeking registration
on  a pro rata


<PAGE>
basis  with  all  other  selling  shareholders  seeking registration in any such
registration  statement.

     (b)     DEMAND  REGISTRATION  RIGHTS.  In the event that the Warrant Shares
are  excluded  from  registration  as  described  in  2(a)  above  (the "initial
registration"),  the  Company  will  at  its  own  expense  file  a registration
statement at the next earliest practicable date not later than 90 days following
completion  of  that  offering  and  include  the  Warrant  Shares  (the "Demand
Registration").  Such  registration statement may be a post effective amendment,
registration  under  Form  S-3 or any other registration process available to it
under the then existing SEC guidelines.  In the event the Demand Registration is
not  filed  by the 90th day following the completion of the offering included in
the  initial  registration,  the  Company agrees that it will then be in default
under  the terms of this Agreement.  The holder of the Warrant Shares shall have
all  rights  and  remedies  available  to him to seek damages as well as to seek
specific  performance.

     3.     INFORMATION TO BE FURNISHED BY CII. CII shall furnish to the Company
in  writing  all  information within its possession or knowledge required by the
applicable  rules  and regulations of the Commission and by any applicable state
securities or blue sky laws concerning CII, the proposed method of sale or other
disposition  of  the  shares of Common Stock being sold by CII in such offering,
and  the  identity of and compensation to be paid to any proposed underwriter or
underwriters  to  be  employed  in  connection  with  such  offering.

     4.     COSTS AND EXPENSES.  The Company shall pay all costs and expenses in
connection  with  the Registration under this Agreement; provided, however, that
                                                         --------  -------
CII  and  the  holder  shall  bear  the fees and expenses of its own counsel and
accountants  and  any selling expenses relating to Registrable Shares registered
on  behalf  of  CII  or  the  holder in connection with such offering, including
without  limitation,  any transfer taxes, underwriting discounts or commissions.

     5.      NOTICES.  All  notices  and  other  communications  provided  for
hereunder  must be in writing and shall be deemed to have been given on the same
day  when personally delivered or sent by confirmed facsimile transmission or on
the  next  business  day  when  delivered by receipted courier service or on the
third  business  day when mailed with sufficient postage, certified mail, return
receipt requested, to the following addresses: (a) if to the Company, to The Bio
Balance  Corp.,  16  East 34th Street, New York, NY 10016, Attention Paul Stark,
President,  and to New York Health Care, Inc., 1850 McDonald Avenue Brooklyn New
York  11223, Attention: Jerry Braun, President; and (b) if to the Holder of this
Warrant,  to  Corval  International  Inc.  :____________________________________
Attention  Alfred  G.  Packer , President, or to such other address as it may be
changed  from time to time on the books of the Company by written notice. Copies
of all notices to the Company shall be simultaneously given to William J. Davis,
Esq., Scheichet& Davis, P.C., 800 Third Avenue - 29th Floor, New York, NY 10022,
fax  (212)  371-7634,  e-mail  william@scheichetdavis.com. Each party hereto may
from  time to time change the address to which notices to it are to be delivered
or mailed hereunder by notice in writing to the other party.

     7.     ENTIRE  AGREEMENT;  MODIFICATION  OF  AGREEMENT;  CONSENTS.  This
Agreement  constitutes  the  entire  agreement  between  the parties hereto with
respect to the subject matter hereof.  Changes in or additions to this Agreement
may  be  made  and/or compliance with any covenant or condition herein set forth
may be omitted only upon written consent of all the parties hereto.


<PAGE>
     8.     SUCCESSORS  AND  ASSIGNS.  This  Agreement shall be binding upon and
inure  to  the  benefit  of  the  parties  hereto and their respective permitted
successors,  transferees  and  assigns.

     9.     GOVERNING  LAW.  This  Agreement  shall be governed by and construed
and enforced in accordance with the laws of the State of New York without giving
effect  to  the choice of law or conflict of laws principles. The New York state
and federal courts in New York shall have jurisdiction over any and all disputes
arising  out  of  or  relating  to  this  Agreement.

     10.     COUNTERPARTS.  This Agreement may be executed in counterparts, each
of which shall be deemed an original and both of which together shall constitute
one  and  the  same  agreement.

     IN WITNESS WHEREOF, the parties hereto have caused this Registration Rights
Agreement to be duly executed as of the date first set forth above.

                                  NEW YORK HEALTH CARE, INC.


                                  By:___________________________________
                                  Name:_________________________________
                                  Its:__________________________________


                                  CORVAL INTERNATIONAL INC

                                  By:___________________________________
                                  Name:_________________________________
                                  Its:__________________________________


<PAGE>