Fenugreek

What it is

Fenugreek (Trigonella foenum-graecum) is an herb whose seed extracts, often standardized for saponins, are used in supplements aimed at libido and testosterone. Proposed mechanisms include modulation of enzymes involved in testosterone metabolism, though the exact pathway is not firmly established.

Benefits

Standardized fenugreek extract at about 500–600 mg/day has shown improvements in libido and sexual function over roughly 8–12 weeks. Its effect on measured testosterone is mixed—some trials report modest increases in free or saliva testosterone, while others find no significant change versus placebo.

When to take it

Taken once daily with a meal in most trials; benefits accrued over weeks of consistent use rather than acutely, so there is no specific pre-workout timing requirement.

Side effects

Common effects are mild and digestive (bloating, gas, diarrhea) and a maple-syrup-like body odor; it may lower blood sugar, so caution is warranted for people on diabetes medication. Avoid in pregnancy.

Sources

• Fenugreek extract on plasma and saliva testosterone—double-blind RCT (PLOS One, 2024)
• Furosap fenugreek extract on testosterone and sperm profile (Int J Med Sci, 2017)

Products containing Fenugreek

No products in our database contain this ingredient yet.