When a child takes a 1 milligram dose of melatonin, the hormone quickly enters their bloodstream, signaling to the brain that it’s time for sleep. Melatonin reaches levels in the blood that can be ...

Melatonin supplements can come in several forms: tablets, capsules, gummies and liquid. One of the newest ... lower doses of melatonin (one to three mg) are the most effective for regular use.