UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                   FORM 12b-25                  SEC FILNUMBER
                                                                  0-27072
                           NOTIFICATION OF LATE FILING        ---------------
                                                                 CUSIP NUMBER
                                                                   42366C103

(Check One):  |X|Form 10-K |_|Form 20-F |_|Form 11-K |_|Form 10-Q |_|Form N-SAR

          For Period Ended:   12/31/06
                           -------------------
          (   ) Transition Report on Form 10-K
          (   ) Transition Report on Form 20-F
          (   ) Transition Report on Form 11-K
          (   ) Transition Report on Form 10-Q
          (   ) Transition Report on Form N-SAR
          For the Transition Period Ended:_____________________________________

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 Read Instructions (on back page) Before Preparing Form. Please Print or Type.

      NOTHING IN THIS FORM SHALL BE CONSTRUED TO IMPLY THAT THE COMMISSION
                 HAS VERIFIED ANY INFORMATION CONTAINED HEREIN.
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     If the notification relates to a portion of the filing checked above,
            identify the Item(s) to which the notification relates:

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PART I -- REGISTRANT INFORMATION

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Full Name of Registrants:

Hemispherx Biopharma, Inc.
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Former Name if Applicable


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Address of Principal Executive Offices (Street and Number)

1617 JFK Boulevard
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City, State and Zip Code

Philadelphia, PA  19103
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PART II - RULES 12b-25(b) AND (c)

If the subject report could not be filed without  unreasonable effort or
expense and the registrant seeks relief pursuant to Rule 12b-25(b), the
following should be completed (Check box if appropriate)

 / /   (a)  The reasons described in reasonable detail in Part III
            of this form could not be eliminated without
            unreasonable effort or expense;
 /X/   (b)  The subject annual report on Form 10-K will be filed
            on or before the fifteenth calendar day following the
            prescribed due date; and
 / /   (c)  The accountant's statement or other exhibit required by
            Rule 12(b)-25(c) has been attached if applicable.

PART III -- NARRATIVE

State  below in  reasonable  detail the  reasons  why the Form 10-K could not
be filed within the prescribed time period. (Attach Extra Sheets If Needed)

     The  registrant  was  unable  to file its Form  10-K for the  period  ended
December 31, 2006 without  unreasonable  expense and effort due to its inability
to  finish  the  required  financial  statements  within a  sufficient  time for
management to review the financial  statements with its independent  accountants
and to prepare the management  discussion and analysis.  This annual report will
be filed on or before the fifteenth  calendar day following the  prescribed  due
date.

PART IV --OTHER INFORMATION

(1)  Name  and  telephone  number  of  person  to  contact  in  regard  to
this notification:

     Robert Peterson                               (215)         988-0080
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     Name                                        Area Code    Telephone Number

(2)Have all other periodic  reports  required under Section 13 or 15(d) of
   the Securities Exchange Act of 1934 or Section 30 of the Investment
   Company  Act of 1940 during the  preceding 12 months
   (or for such  shorter) period  that the registrant was required to file
   such reports) been filed?  If  answer is no, identify report(s).
                                                              |X| Yes  | |No

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(3)Is it anticipated that any significant change in results of operations
   from the corresponding  period for the last fiscal year will be
   reflected by  the earnings  statements  to be  included  in the
   subject  report  or portion thereof?
                                                               | | Yes |X|No

   If so, attach an explanation of the anticipated  change, both  narratively
   and quantitatively, and, if appropriate, state the reasons why a reasonable
   estimate of the results cannot be made.

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                             Hemispherx Biopharma, Inc.
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                  (Name of Registrant as Specified in Charter)

has  caused this  notification  to be signed on their behalf by the
undersigned hereunto duly authorized.


Date     March 16,2007                 By   /x/ Robert E. Peterson
    ---------------------------         ---------------------------------------
                                          Robert E. Peterson
                                          Chief Financial Officer

Instruction: The form may be signed by an executive officer of the registrant
or by any other duly  authorized  representative.  The name and title of the
person signing  the form  shall  be typed or  printed  beneath  the
signature. If the statement is signed on behalf of the registrant
by an authorized representative (other than an executive officer),
evidence of the representative's authority to sign on behalf of the registrant
shall be filed  with the form.

-----------------------------------ATTENTION-----------------------------------
    INTENTIONAL MISSTATEMENTS OR OMISSIONS OF FACT CONSTITUTE FEDERAL CRIMINAL
                        VIOLATIONS (SEE 18 U.S.C. 1001).
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