Independent laboratory testing of 20 popular turkesterone supplements has revealed that 65% contain less than half the advertised amount, and three products contained zero turkesterone whatsoever.

Test Results

Products That Passed

Gorilla Mind, Nootropics Depot, and Double Wood Supplements were among the few that met or exceeded label claims. Consumers should look for products with third-party certificates of analysis (COA) published on the manufacturer's website.