Filed Pursuant to Rule 424(b)(3)
                                                     Registration No. 333-134302

Prospectus Supplement No. 1
to Prospectus dated June 14, 2006

                                  AVITAR, INC.

                                28,000,000 Shares
                                  Common Stock

     We are  supplementing  the  prospectus  dated  June  14,  2005  to  provide
information  contained  in our  Current  Report  on  Form  8-K  filed  with  the
Securities and Exchange Commission on July 11, 2006 including the following:

     On July 6, 2006, Avitar,  Inc. ("Avitar" or the "Company"),  entered into a
     Securities  Purchase Agreement and related agreements as part of a $750,000
     private placement with AJW Partners, LLC, AJW Offshore, Ltd., AJW Qualified
     Partners,  LLC, and New Millennium  Capital Partners II, LLC (collectively,
     the "Purchasers").

     The  securities  issued in the private  placement  are  $750,000 of Secured
     Convertible  Notes (the  "Notes") and  1,500,000  seven-year  warrants (the
     "Warrants").

     The  Notes  bear  interest  at 8%,  mature  three  years  from  the date of
     issuance,  and are convertible into the Company's common stock at any time,
     at the  Purchasers'  option,  at 65% of the  average  of the  three  lowest
     intraday trading prices for the Common Stock for the 20 trading days ending
     the day before the date that the investors elect to convert.

     The full  principal  amount of the Notes,  plus a default  interest rate of
     15%, is due upon a default under the terms of the Notes.  The Company has a
     right to prepay the Notes under certain  circumstances at a premium ranging
     from 20% to 35% depending on the timing of such prepayment

     In addition,  the Company  granted the  Purchasers  a security  interest in
     substantially all of our assets.  The Company is further required to file a
     Registration  Statement with the Securities and Exchange  Commission within
     30 days of  receipt  of demand  from the  Purchasers.  If the  Registration
     Statement  is not filed on time or not declared  effective  within 120 days
     from the date of receipt of such demand,  the Company is required to pay to
     the  Purchasers  damages in Common  Stock or cash,  at the  election of the
     Company,  in an amount  equal to two percent of the  outstanding  principal
     amount of the Notes per month plus accrued and unpaid interest.

     The Warrants are exercisable until seven years from the date of issuance at
     a purchase  price of $0.22 per  share.  The  Purchasers  may  exercise  the
     Warrants on a cashless  basis if the shares of Common Stock  underlying the
     Warrants  are not then  registered  pursuant to an  effective  registration
     statement.  In the event the Purchasers exercise the Warrants on a cashless
     basis,  we will not receive any  proceeds.  In  addition,  the Warrants are
     subject to standard anti-dilution provisions.

     The Purchasers have agreed to restrict their ability to convert their Notes
     or exercise their Warrants and receive shares of our common stock such that
     the number of shares of common stock held by them and their  affiliates  in
     the aggregate after such conversion or exercise does not exceed 4.9% of the
     then issued and outstanding shares of Common Stock.

     Under the  Securities  Purchase  Agreement,  the Purchasers are entitled to
     reimbursement  for  expenses  up to  $20,000,  which  was  deducted  at the
     closing.

     This  Prospectus  Supplement  is  not  complete  without,  and  may  not be
delivered or utilized except in connection  with, the Prospectus  dated June 14,
2006,  with  respect to the  resale of the  28,000,000  shares of common  stock,
including any amendments or supplements thereto.

     INVESTING  IN OUR COMMON STOCK  INVOLVES A HIGH DEGREE OF RISK.  YOU SHOULD
READ CAREFULLY THIS ENTIRE  PROSPECTUS,  INCLUDING THE SECTION  CAPTIONED  "RISK
FACTORS" BEGINNING ON PAGE 3, BEFORE MAKING A DECISION TO PURCHASE OUR STOCK.

     NEITHER THE  SECURITIES AND EXCHANGE  COMMISSION  NOR ANY STATE  SECURITIES
COMMISSION HAS APPROVED OR  DISAPPROVED  OF THESE  SECURITIES OR PASSED UPON THE
ACCURACY OR ADEQUACY OF THIS PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY IS A
CRIMINAL OFFENSE.


                  The date of this Supplement is July 11, 2006