Nytol 50mg One-A-Night 20 Tablets Nytol One-A-Night 50mg is a night-time sleep aid designed for the temporary relief of occasional sleeplessness. Each tablet contains 50mg diphenhydramine hydrochloride, an antihistamine that helps you drift off and enjoy more restful sleep when difficulty sleeping is impacting your nights and daily life. Key Features Contains 50mg diphenhydramine hydrochloride per tablet. Clinically proven aid to the relief of temporary sleep disturbance. Convenient one-tablet dose at bedtime. Pack size: 20 tablets. For adults and adolescents aged 16 years and over. How It Works Diphenhydramine hydrochloride is a sedating antihistamine. It works by blocking the action of histamine in the brain areas that help regulate wakefulness, promoting drowsiness and helping you to fall asleep more easily. Additional Information Store in a cool, dry place below 25°C and in the original packaging. Do not use after the expiry date shown on the pack. This information is a summary for display purposes only and does not replace the full patient information leaflet supplied with the product.