Posted 14 August 2023
Researchers analyzed 57 dietary supplements sold online and labeled as containing: R vomitoria, methylliberine, turkesterone, halostachine, or octopamine.
The researchers found:
- no detectable amount of the labeled ingredient in 23 of the products
- the actual quantity of the labeled ingredient ranged from 0.02% to 334% of the labeled quantity in 34 of the products
- only six accurately labeled products that contained a quantity of the ingredient within 10% of the labeled quantity
- seven products that contained at least one ingredient prohibited by the U.S. Food and Drug Administration
Reference:
Cohen PA, and others. Presence and quantity of botanical ingredients with purported performance-enhancing properties in sports supplements. JAMA Network Open, 6(7):e2323879, 2023
Presence and Quantity of Botanical Ingredients With Purported Performance-Enhancing Properties in Sports Supplements
Pieter A. Cohen, MD1,2; Bharathi Avula, PhD3; Kumar Katragunta, PhD3; et alJohn C. Travis, BS4; Ikhlas Khan, PhD3
JAMA Netw … Read the rest