Melatonin is a naturally occurring hormone produced by the pineal gland that helps regulate the sleep-wake cycle. It is commonly used as a supplement to support sleep, adjust circadian rhythm, and manage jet lag.
Disclaimer: If provided for research purposes, melatonin is not intended for human consumption unless specifically labeled and approved as a dietary supplement or medication. When sold as a research chemical, it is intended strictly for laboratory research only. The purchaser assumes full responsibility for proper handling and compliance with applicable regulations.