» Cephradine for Oral Suspension is a dry mixture of Cephradine and one or more suitable buffers, colors, diluents, and flavors. It contains not less than 90.0 percent and not more than 125.0 percent of the labeled amount of cephradine, calculated as the sum of cephradine (C₁₆H₁₉N₃O₄S) and cephalexin (C₁₆H₁₇N₃O₄S).