Description
Nytol One-A-Night works by decreasing the level of arousal that occurs in the brain to help induce sleep more easily. Nytol contains the active ingredient diphenhydramine hydrochloride, an antihistamine that helps to block histamine from stimulating arousal-promoting areas of the brain. Nytol can be taken to help those experiencing temporary sleeplessness by making it easier to fall asleep as well as promoting more restful sleep.