The Claim
Serotonin, a potent neurotransmitter and strictly controlled substance, is present as an unlabelled contaminant in approximately 26% of commercial melatonin supplements, with detected concentrations ranging from 1 to 75 micrograms per dose. The presence of this biologically active compound in sleep aids raises significant safety concerns, particularly regarding potential adverse interactions with other medications or the risk of serotonin syndrome in sensitive individuals.
Source: Melatonin Natural Health Products and Supplements: Presence of Serotonin and Significant Variability of Melatonin Content
What the research says
Supports is higher
Support is ahead, but a single strong opposing study can change this.
Supports
29score
Challenges
0score
These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.
Description
1 study reviewed
What the research says
1 studyA laboratory analysis of popular melatonin pills discovered that roughly a quarter of them were contaminated with serotonin, a different brain chemical that could cause unwanted side effects.
Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies
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