Melatonin supplements are always safe
8.0Strong
evidence
evidence
The Claim
The belief exists that because melatonin is a natural hormone, supplements are automatically safe for everyone to use without any side effects.
Origin
This myth is often perpetuated by the supplement industry and the common perception that 'natural' equals 'safe'.
What Science Says
Though melatonin is generally considered safe for short-term use, research, including systematic reviews, has shown that it can have side effects like dizziness, daytime drowsiness, and hormone-related changes. Long-term safety data is lacking, and potential interactions with medications should be considered.
Verdict
Mostly False
Sources
- PMID:36235587 Is Melatonin the "Next Vitamin D"?: A Review of Emerging Science, Clinical Uses, Safety, and Dietary Supplements.
- PMID:35843245 Comparative effects of pharmacological interventions for the acute and long-term management of insomnia disorder in adults: a systematic review and network meta-analysis.
- PMID:34923676 Safety of higher doses of melatonin in adults: A systematic review and meta-analysis.