What are the forms of melatonin?
Over-the-counter melatonin supplements are available in doses of 1-10 mg. Melatonin is sold as a dietary supplement and is not regulated by the FDA. So, it is possible for the content of the supplement to differ from what is listed on the product label. Before you take melatonin be sure the brand is reputable and discuss taking this and any supplement with your doctor. The American Academy of Sleep Medicine states that melatonin supplements appear to be safe. There is no evidence of serious risks related to their use, but the long-term effects are unknown.
Snacks and beverages marketed as “relaxation” or “chill out” products containing various doses of melatonin along with other ingredients also are available. These products are not regulated by the FDA and are not guaranteed to be effective.