Sports supplements may not have the ingredients they say they have

Embargoed until: Publicly released: 2023-07-18 01:00

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Sports supplements do not always contain the ingredients they say they do, according to a US study. The researchers analysed the contents of 57 supplements they bought online, all advertised as containing one of the following ingredients; R vomitoria, methylliberine, turkesterone, halostachine, or octopamine. They say 40% of these products did not contain a detectable amount of the ingredient listed. Among those that did contain the ingredient listed on the label, the researchers say the actual quantity of ingredient found ranged between 0.02% to 334% of the quantity on the label.

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Journal/
conference: JAMA Network Open

Research:Paper

Organisation/s: Cambridge Health Alliance, USA

Funder: Dr Cohen reported receiving research support from Consumers Union and the PEW Charitable Trusts, and personal fees from UptoDate outside the submitted work; in addition, he was the subject of a civil suit brought by Hi-Tech Pharmaceuticals, a supplement company, and the jury found in his favor. No other disclosures were reported.

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