UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                              WASHINGTON, DC 20549
                                  ------------

                                  SCHEDULE 13D
                                 (Rule 13d-101)

         INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO 13d-
             1(a) AND AMENDMENTS THERETO FILED PURSUANT TO 13d-2(a)
                                (Amendment No. )

                            NTERPHARM HOLDINGS, INC.
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                                (Name of Issuer)

 SERIES A 10% CUMULATIVE CONVERTIBLE PREFERRED STOCK, $0.01 PAR VALUE PER SHARE
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                         (Title of Class of Securities)

                                   460588205
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                                 (CUSIP Number)

                               Darren Ofsink, Esq.
                                Guzov Ofsink, LLC
                         600 Madison Avenue, 14th Floor
                            New York, New York 10022
                             Tel. No. (212) 371-8008
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                  (Name, Address and Telephone Number of Person
                Authorized to Receive Notices and Communications)

                                 June 5, 2006
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             (Date of Event Which Requires Filing of This Statement)


----------------------

If the filing person has previously  filed a statement on Schedule 13G to report
the  acquisition  which is the subject of this  Schedule 13D, and is filing this
schedule because of Rule 13d-1(b)(3) or (4), check the following box |_|

Note: Six copies of this statement, including all exhibits, should be filed with
      the Commission. See Rule 13d-1 (a) for other parties to whom copies are to
      be sent. (Continued on the following pages)






CUSIP No.  460588205
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1    NAMES OF REPORTING  PERSONS:       Guzov Ofsink, LLC

     I.R.S.  IDENTIFICATION  NOS. OF ABOVE  PERSONS  (ENTITIES ONLY)

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2    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*

         (a)   [_]
         (b)   [_]
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3    SEC USE ONLY
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4    SOURCE OF FUNDS*                   WC
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5    CHECK BOX IF DISCLOSURE OF LEGAL  PROCEEDINGS IS REQUIRED
     PURSUANT TO ITEM 2(d) or 2(e)    [_]
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6    CITIZENSHIP OR PLACE OF ORGANIZATION
                              New York
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NUMBER OF             7.  SOLE VOTING POWER:               3,875
SHARES BENE-
FICIALLY              8.  SHARED VOTING POWER                  0
OWNED BY
EACH REPORT-          9.  SOLE DISPOSITIVE POWER:          3,875
ING PERSON
WITH                 10.  SHARED DISPOSITIVE POWER             0
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11  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

                                          3,875
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12   CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
     CERTAIN SHARES*           [_]
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13   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
                                           50.9%
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14   TYPE OF REPORTING PERSON*
                                         OO
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                                       2



     This  statement  on Schedule  13D (this  "Schedule  13D") is being filed to
report the beneficial ownership of Series A 10% Cumulative Convertible Preferred
Stock,  $0.01 par  value per share  (the  "Series A  Preferred")  of  Interpharm
Holdings, Inc., a Delaware corporation (the "Issuer"). All statements concerning
parties  listed on Schedule A are made to the best  knowledge  of the  Reporting
Person.


Item 1.  Security and Issuer.

     The class of equity  securities  to which  this  statement  relates  is the
Series A Preferred of the Issuer. The principal  executive offices of the Issuer
are located at 75 Adams Avenue, New York, New York, 11788.


Item 2.  Identity and Background.

     The name of the person filing this  statement is Guzov  Ofsink,  LLC, a New
York limited liability  company ("Guzov Ofsink" or the "Reporting  Person") with
its principal place of business  located at 600 Madison Avenue,  14th Floor, New
York, New York 10022.

     The names,  business  address,  citizenships  and  present  occupations  or
employment of each member of Guzov Ofsink are set forth in Schedule A hereto.

     (d) - (e) During the last five years,  neither the Reporting Person nor, to
the best knowledge of the Reporting Person,  any person named in Schedule A, has
been (i) convicted in a criminal  proceeding  (excluding  traffic  violations or
similar  misdemeanors)  or (ii) a party to a civil  proceeding  of a judicial or
administrative body of competent jurisdiction and as a result of such proceeding
was or is  subject  to a  judgment,  decree  or  final  order  enjoining  future
violations of, or prohibiting or mandating  activities subject to, United States
Federal or State  securities laws or finding any violations with respect to such
laws.


Item 3.  Source and Amount of Funds or Other Consideration.

     The Reporting Person purchased an aggregate of 3,875 shares of the Series A
Preferred  (collectively,  the  "Shares")  as follows:  (i) 3,148  shares of the
Series A Preferred for $1,500 on June 5, 2006, and (ii) 727 shares of the Series
A Preferred in exchange for 6,296  shares of Common  Stock,  par value $0.01 per
share,  of the Issuer ("Common  Stock") held by the Reporting  Person on June 5,
2006. The Reporting  Person did not acquire  beneficial  ownership of any of the
Shares with borrowed funds.


Item 4.  Purpose of Transaction.

     The Reporting  Person  acquired the Shares in order to approve an amendment
to the  Certificate  of  Incorporation  of the  Issuer  to cause  the  automatic
conversion of Series A Preferred  into Common Stock at the rate of two shares of
Common Stock for one share of Series A Preferred.




                                       3




     Except as set forth above,  the Reporting  Person has no present  intent or
proposals that relate to or would result in : (i) the  acquisition by any person
of additional  securities of the Issuer, or the disposition of securities of the
Issuer;  (ii)  an  extraordinary  corporate  transaction,   such  as  a  merger,
reorganization or liquidation,  involving the Issuer or any of its subsidiaries;
(iii) a sale or transfer of a material  amount of assets of the Issuer or any of
its  subsidiaries;  (iv)  any  change  in the  present  Board  of  Directors  or
management of the Issuer,  including any plans or proposals to change the number
or term of  Directors or to fill any  vacancies  on the Board;  (v) any material
change in the present  capitalization or dividend policy of the Issuer; (vi) any
other material change in the Issuer's business or corporate structure; (vii) any
other  material   change  in  the  Issuer's   charter,   bylaws  or  instruments
corresponding  thereto or other  actions  which may impede  the  acquisition  of
control of the Issuer by any person; (viii) causing a class of securities of the
Issuer to be  delisted  from a national  securities  exchange  or to cease to be
authorized  to be quoted in an  inter-dealer  quotation  system of a  registered
national securities association; (ix) a class of equity securities of the Issuer
becoming eligible for termination of registration pursuant to Section 12 (g) (4)
of the Exchange Act or (x) any action similar to those enumerated above.

     The Reporting  Person reserves the right to determine in the future whether
to change the purpose or purposes  described  above or whether to adopt plans or
proposals of the type specified above.


Item 5.  Interest in Securities of the Issuer.

     (a) and (b) Beneficial  ownership and power over  disposition of the Shares
by each person named in Item 2.

     No persons listed on Schedule A beneficially own any shares of the Issuer.

     (c)  All of the  transactions  in  the  Shares  that  may be  deemed  to be
beneficially owned by the Reporting Person commencing 60 days prior to the event
triggering  the  filing of this  Schedule  13D are  described  in Item 3 of this
Schedule 13D.

     (d) To the best knowledge of the Reporting Person, no person other that the
Reporting  Person has the right to  receive,  or the power to direct the receipt
of, dividends from, or the proceeds from the sale of the Shares reported in Item
5(a) and (b).

     (e) Not applicable.


Item 6. Contracts, Arrangements, Understandings or Relationships With Respect to
        Securities of the Issuer.

     The   Reporting   Person  does  not  have  any   contracts,   arrangements,
understandings,  or  relationships  (legal or  otherwise)  with any person  with
respect to the Common Stock or the  preferred  stock of the  Company,  including
transfer  or voting  thereof,  finder's  fees,  joint  ventures,  loan or option
arrangements,  put or calls, guarantees of profits, division of profits or loss,
or the giving or withholding of proxies.


Item 7.  Material to be Filed as Exhibits.

None.





                                       4




                                    SIGNATURE

     After  reasonable  inquiry and to the best of my  knowledge  and belief,  I
certify that the information  set forth in this statement is true,  complete and
correct.

Date:    June 26, 2006

                                GUZOV OFSINK, LLC


                                /s/ Darren Ofsink
                                ------------------------
                                By: Darren Ofsink
                                Title: Member








                                       5






                                   Schedule A




     The names,  business  address,  citizenships  and  present  occupations  or
employment of each member of Guzov Ofsink are set forth in Schedule A hereto.


Name          Business Address        Citizenship    Occupation  Employment
------------- ----------------------- -------------- ----------- ---------------

Debra Guzov   600 Madison Avenue,     United States  Attorney    Member, Guzov
              14th Floor                                         Ofsink, LLC
              New York, New York
              10022
------------- ----------------------- -------------- ----------- ---------------
Darren Ofsink 600 Madison Avenue,     United States  Attorney    Member, Guzov
              14th Floor                                         Ofsink, LLC
              New York, New York
              10022
------------- ----------------------- -------------- ----------- ---------------

1    The  calculation  of the  foregoing  percentage is based on 7,611 shares of
     Interpharm Holdings,  Inc.'s Series A Preferred Stock outstanding as of May
     15, 2006.