Melatonin

Key facts Melatonin is naturally produced in the brain and can help control your sleep cycle. Melatonin levels increase when it is dark and are lower when you are exposed to light. Melatonin is one way to help you control your sleep cycle, but if you are having trouble sleeping there may be other causes or treatments available. Melatonin can also be prescribed as a medicine for some people, and is available over the counter for people aged over 55 years. Your doctor or pharmacist can advise you on whether melatonin is right for you. What is melatonin? Melatonin is