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A Crossover Clinical Trial Investigating the Effects of Geranylgeraniol (GG) Supplementation on Testosterone Levels in Healthy Men and Women Over an 18-week Period

NCT06747624 · Status: COMPLETED · Phase: NA · Type: INTERVENTIONAL · Enrollment: 34

Last updated 2026-05-01

No results posted yet for this study

Summary

The primary purpose of this study is to investigate the effects of geranylgeraniol (GG) supplementation on testosterone levels in middle-aged (40 to 65 years) healthy men and women.

The research team hypothesizes that geranylgeraniol (GG) supplementation will enhance testosterone levels and improve self-reported health outcomes in a healthy population.

Conditions

  • Wellness
  • Health

Interventions

DIETARY_SUPPLEMENT

Geranylgeraniol 300 mg

300 mg of trans-geranylgeraniol (GG)

DIETARY_SUPPLEMENT

Placebo

300 mg medium chain triglycerides

Sponsors & Collaborators

  • Designs for Health

    lead INDUSTRY

Study Design

Allocation
NON_RANDOMIZED
Purpose
OTHER
Masking
SINGLE
Model
CROSSOVER

Eligibility

Min Age
40 Years
Max Age
65 Years
Sex
ALL
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2025-01-30
Primary Completion
2025-09-19
Completion
2025-09-19

Countries

  • United States

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT06747624 on ClinicalTrials.gov