Written by Tegan Smedley, PharmD, BCPS, APh | Reviewed by Aunna Pourang, MD Published on December 22, 2021print_outlinedemail_outlined Key takeaways: Melatonin is a dietary supplement. Dietary supplements don’t need to perform the same safety and effectiveness studies as prescription medications before being sold. Short-term melatonin use appears to be safe for most adults and has...