When a stressful day gets in the way of a restful night, you need something that can help you fall asleep and wake up refreshed. Unisom SleepMelts quickly melt away to help with your restless nights. These over-the-counter sleep-aids dissolve on your tongue in just 30 seconds — no water required. These sleep aids in meltable tablet form are made with diphenhydramine HCI. It works by blocking the effects of a naturally occurring neurotransmitter your body makes called histamine. When histamine is reduced, you experience drowsiness, which allows you to fall asleep faster and stay asleep longer. is safe if used as directed, non-habit forming and helps you sleep soundly. Take control of your sleep with Unisom, the #1 Pharmacist Recommended OTC Sleep-Aid Brand.*DIRECTIONS: Adults and children 12 years and older: 2 tablets (25 mg each) at bedtime if needed, or as directed by doctor. Place 2 tablets on tongue; tablets dissolve with or without water. Allow tablets to dissolve in mouth or chew before swallowing.*Data represents brand/product selections from the 2019 Pharmacy Times Survey of Pharmacists' OTC Recommendations.