Q: I have suffered with chronic insomnia my entire life. A few years ago, I heard about a supplement (GNC Melatonin 1 mg) that is held under the tongue until it dissolves. To my surprise, it worked and changed my life.

A: Melatonin is a natural hormone produced by the brain. It helps to regulate the body’s natural sleep-wake rhythm.
Research supports the role of melatonin in helping people overcome jet lag. Night shift workers sometimes find it helpful in combating sleep disorders (FP Essentials, September 2017).
Controlled-release melatonin has been recommended for chronic insomnia (American Family Physician, July 2017). Although we could find no clinical research on the use of sublingual melatonin for insomnia, the 1-mg dose that you are using appears to be safe.
• article by Joe and Teresa Graedon; copyright The Seattle Times