The primary function of melatonin is to help regulate the body's internal clock, also known as the circadian rhythm. The circadian rhythm helps to synchronize various biological processes with the 24-hour day-night cycle. Melatonin levels typically rise in the evening, signaling to the body that it's time to sleep, and decrease in the morning, promoting wakefulness.
Melatonin supplements are commonly used to help with sleep-related issues, such as insomnia or jet lag. They are available over-the-counter in many countries. Taking melatonin supplements can help regulate sleep patterns by increasing the levels of melatonin in the body.
