What it does: Melatonin helps regulate circadian rhythms by signaling to your body that it is time to wind down and prepare for sleep.
How it is used: Commonly taken to shorten the time needed to fall asleep, to help reset sleep patterns after travel across time zones, or to support sleep for shift workers.
Natural sources and supplement forms: Though the body makes melatonin, very small amounts can be found in foods like tart cherries and walnuts; supplements typically use a synthetic form and come as tablets, capsules, or gummies.
Why it appears in supplement formulas: Melatonin is included for its ability to help support a healthy sleep schedule and ease temporary disruptions in sleep timing.
What to know before use: Melatonin may cause drowsiness and can interact with certain medications; consult a healthcare provider before use if you take sedatives, are pregnant, or have a medical condition.
Melatonin Signals Your Internal Clock When It's Time to Wind Down
Melatonin is released by your brain in response to darkness and helps tell your body when it's time to get ready for sleep—not by sedating you, but by nudging your natural sleep-wake cycle. While your body makes it every night, small amounts are also found in foods like tart cherries and walnuts, although supplement amounts are typically higher.
