Supplement study sees if testosterone gets a boost
Knowledge-focused
Completed
This study tested whether a supplement called geranylgeraniol (GG) can raise testosterone levels in healthy men and women aged 40 to 65. Researchers measured total and free testosterone in 34 participants over 18 weeks using a crossover design. The goal was to see if GG improves …
Phase: NA • Sponsor: Designs for Health • Aim: Knowledge-focused
Last updated Jun 15, 2026 18:56 UTC