The purpose of this study is to compare the relative bioavailability of 5 mg Glyburide/500 mg Metformin Hydrochloride Tablets by Purepac Pharmaceutical Co. with that of 5 mg/500 mg CLUCOVANCE® Tablets by Bristol-Myers Squibb Company following a single oral dose (1 x 5 mg/500 mg tablet) in healthy adult volunteers under fasting conditions.