Unisom Sleepgels Nightime Sleep-Aid Softgels. Safe, non-habit forming. For sleep that restores. #1 Pharmacist recommended ingredient*.. Diphenhydramine HCl 50 mg per SoftGel. Nighttime sleep-aid. Fall asleep fast. Sleep soundly. Wake refreshed. 16 SoftGel liquid filled. Just one SoftGel per dose. This product contains diphenhydramine HCl. Unisom SleepTabs tablets contain doxylamine succinate. *Pharmacy Times - OTC survey. Use. For relief of occasional sleeplessness. Chattem. www.chattem.com. 2008 Chattem, Inc.