Expert Answer
Is melatonin safe to take every night?
Quick Answer
Experts are deeply split. Huberman cautions against it for most adults — it's a hormone, not just a supplement, and commercial doses are 10-30x natural production. Johnson takes it nightly. Hyman recommends it for circadian reset. All agree: protect endogenous production via morning sunlight first.
Moderate Consensus
on Melatonin overall
What Researchers Say
Cautions against melatonin for most adults. Prefers magnesium-apigenin-theanine stack. Makes exception for elderly.
Takes melatonin nightly before bed. His team reviewed the evidence.
Rising melatonin reduces insulin production — late-night eating with high melatonin impairs glucose control.
Most enthusiastic. Recommends for circadian reset, sleep, anti-inflammatory support, and acid reflux.
Detailed Answer
Melatonin is the most divisive sleep supplement. Huberman explains it's a hormone with endocrine effects, not merely a supplement. Commercial doses (3-10mg) are 10-30x the body's natural production (~0.1-0.3mg). Evidence shows it increases total sleep by only a few minutes in healthy adults. He prefers magnesium threonate, apigenin, and theanine.
Johnson takes it nightly based on his team's evidence review. Hyman recommends it broadly for sleep, circadian reset, and even acid reflux. Patrick adds the metabolic concern: rising melatonin signals the pancreas to reduce insulin, making late-night eating more harmful.
All 5 agree: morning sunlight and avoiding artificial light at night matters more than any supplement.
Related Questions
What dose of melatonin is safe?
If used at all, most experts suggest 0.3-1mg — much lower than typical commercial doses of 3-10mg.
More Questions About Melatonin
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Full Melatonin Consensus Report
See what all 5 experts agree and disagree on