
More people than ever are using melatonin to help them get to sleep and some are taking more than the recommended dose, which could be causing them harm, warn experts.
The sleep aid is supposed to be used short-term, to treat insomnia in the case of things like jet lag or shift work. Considered a dietary supplement, melatonin is a hormone that the brain produces in response to darkness. Due to its categorisation, it’s not as regulated by the Food and Drug Administration.