EXHIBIT 23.2 CONSENT OF INDEPENDENT REGISTERED CHARTERED ACCOUNTANTS We consent to the incorporation by reference in Registration Statements No. 333-117822, 333-112891, 333-110493, 333-106519, 333-67118, 333-51194 and No. 333-42452 of Generex Biotechnology Corporation and Subsidiaries (the Company) on Forms S-3, of our report dated October 7, 2002 appearing in this Annual Report on Form 10-K of the Company for the year ended July 31, 2004. /s/ Deloitte & Touche LLP - ------------------------------- Independent Registered Chartered Accountants Toronto, Ontario November 10, 2004 1