Melatonin content of supplements varies widely, study finds

The melatonin content of dietary supplements often varies widely from what is listed on the label, a new study has found. Melatonin is a natural hormone that helps regulate the daily cycle of sleep and wakefulness, with melatonin production increasing at night and decreasing in the morning. It also is widely available as a dietary supplement.

Originally published at https://www.sciencedaily.com/releases/2017/02/170214162728.htm