DailyMed - CEPHALEXIN powder, for suspension Cephalexin for Oral Suspension, USP is a white to off white granular powder with characteristic flavor, and gives orange colored viscous suspension after reconstitution with water. After mixing, each 5 mL of Cephalexin for Oral Suspension, USP, will contain cephalexin monohydrate equivalent to 125 mg (360 micro mol) or 250 mg (720 micro mol) of ...