Category guide
Testosterone supplements: what the evidence really says
Testosterone boosters are widely marketed, but the evidence varies substantially by ingredient and population. A systematic review found that most proposed boosters studied did not increase total testosterone, with some possible exceptions in specific populations.
What research suggests
A systematic review published in the International Journal of Impotence Research evaluated 52 studies across 27 proposed testosterone boosters and found that most failed to increase total testosterone. Some ingredients were considered possibly effective in certain populations, which is different from proving that every commercial blend containing them works.
How to shop more critically
Look for transparent doses, research that matches the ingredient form and population, realistic claims, clear warnings and straightforward purchase terms.
See this framework applied to Critical TSources
Morgado A, et al. “Do ‘testosterone boosters’ really increase serum total testosterone? A systematic review.” International Journal of Impotence Research, 2024. PMID 37697053.
U.S. Federal Trade Commission. Health Products Compliance Guidance. Current FTC business guidance on health-related advertising substantiation and disclosures.