Discover the comprehensive guide to melatonin , a natural sleep aid. Learn about its uses , recommended dosage, potential side effects, and interactions with other substances. Make informed decisions for a better night's sleep. Melatonin is used to combat jet lag and ease sleep problems like insomnia. Learn about uses , benefits , dosage for adults / kids, safety and side effects. Melatonin is a hormone that regulates sleep-wake cycles. It is used for insomnia, jet lag, cancer, and other conditions, but it can also cause side effects and interact with other drugs. Melatonin is a natural hormone produced by the pineal gland in the brain and is also a synthetic dietary supplement used to treat insomnia symptoms and other conditions such as jet lag, Alzheimer’s disease, chronic fatigue syndrome, nicotine withdrawal, winter depression, prevention of cluster headache, migraine headache, cancer (as an adjunct therapy), and others. Common side effects of melatonin include headaches, dizziness, drowsiness, nausea, abdominal cramps, disruption of circadian ...