Medically reviewed by Patricia Mikula, PharmD Key Takeaways While melatonin supplements can support the onset of sleep in most people, the time it takes to work and the duration of its activity can ...

Melatonin is not physically addictive, but some people may feel they need it to sleep. Low doses of melatonin (0.3 mg to 1 mg) can be as effective as higher doses. Using melatonin is best as a ...