Generic for PepcidŽ - Famotidine for Oral Suspension USP, 40 mg per 5 mL is a white to off-white powder containing 400 mg of famotidine for constitution. When constituted as directed, famotidine for oral suspension is a smooth, mobile, off-white, homogeneous suspension with a cherry-mint flavor, containing 40 mg of famotidine per 5 ml.