How many studies support Melatonin?
Melatonin is among the most heavily meta-analyzed sleep supplements, and the picture that emerges is a real but modest effect that varies by population. That's backed by 8 published studies in Vitaebase's database, including 8 meta-analyses, the most recent from 2024 -- a fairly substantial body of research for a single topic.
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Melatonin
Moderate evidence
Evidence
62
Impact
30