EXHIBIT 4.7

TO:  The Purchasers of Generex Biotechnology Corporation 6% Convertible
     Debentures, Warrants and Additional Investment Rights

Gentlemen:

         This letter will confirm my agreement to vote all shares of Generex
Biotechnology Corporation, a Delaware corporation (the "Company") voting stock
over which I have voting control in favor of any resolution presented to the
shareholders of the Company to approve the issuance, in the aggregate, more than
19.999% of the number of shares of common stock of the Company outstanding on
the date of closing of the pursuant to that certain Securities Purchase
Agreement, dated November 10, 2004, among the Company and the purchasers
signatory thereto (the "Purchase Agreement") and the other agreements entered
into in connection therewith or as otherwise may be required by the applicable
rules and regulations of the American Stock Exchange (or any successor entity).
This agreement is given in consideration of, and as a condition to enter into
such Securities Purchase Agreement and is not revocable by me.

                                      ________________________
                                      Name:
                                      Percentage Beneficial Ownership: