An eye-opening analysis of common, over-the-counter sleep aids finds they contain wildly variable amounts of melatonin, with some packing up to 347 percent of the amount on the label.
The study, published Tuesday in JAMA, found that 22 of 25 melatonin gummy products analyzed—88 percent—were inaccurately labeled. That is, they contained over 10 percent more or less melatonin than what was listed on the packaging. Together, the dietary supplement products contained a range of melatonin that spanned 1.3 mg to 13.1 mg per serving. And those actual quantities represented a range of 74 percent to 347
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