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Is 20mg of Melatonin Too Much?

Potential Side Effects of High-Dose Melatonin Melatonin is a hormone produced by the pineal gland in the brain that regulates the sleep-wake cycle. It is also available as a dietary supplement and is often used to treat sleep disorders such as insomnia. While melatonin is generally considered safe, taking high doses of melatonin can lead to several potential side effects.…