Supplement study sees if testosterone gets a boost
NCT ID NCT06747624
First seen May 02, 2026 · Last updated Jun 15, 2026 · Updated 8 times
Summary
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 hormone levels and self-reported health, but this is an early-stage investigation, not a treatment for any disease.
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This is a summary of the original study . Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
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Locations
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Designs for Health, Inc.
Palm Coast, Florida, 32164, United States
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.