WORCESTER, Mass., Dec. 13, 2007 (PRIME NEWSWIRE) -- Generex Biotechnology Corporation (Nasdaq:GNBT), the leader in drug delivery for metabolic diseases through the inner lining of the mouth, announced today that it has received a $400,000 purchase order for the Company's over-the-counter products, including Glucose Rapid Spray(tm), from Leosons General Trading Company ("Leosons"), its Marketing and Distribution Partner in the Middle East.