Testosterone boost? new study tests natural supplement in healthy adults
Symptom relief
Completed
This study tested whether a supplement called geranylgeraniol (GG) can increase testosterone levels in healthy men and women aged 40 to 65. Over 18 weeks, 34 participants took the supplement in a crossover design. The goal was to see if GG could improve hormone levels and self-re…
Phase: NA • Sponsor: Designs for Health • Aim: Symptom relief
Last updated May 04, 2026 16:18 UTC