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Herb

Fenugreek

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Fenugreek. Spice/herb traditionally for libido & glycemic control; modest free-T effects.

How it works. Furostanolic saponins may inhibit aromatase and 5-AR; soluble fiber lowers postprandial glucose.

What the research supports. 3 graded claims. Strongest: Improves libido and sexual function (moderate).

How much to take. Typical dose: 500–600 mg Testofen or 5 g whole seed.

Side effects and interactions. 2 medication interactions listed. No serious side effects listed at normal doses.

Stacking. Pairs well with A high-quality multivitamin, Omega-3 (EPA/DHA). Avoid combining with Pregnancy.

Common forms. Available as Testofen (Furosap), Fenugreek seed powder.

Key studies. 10 studies cited. The strongest are listed with links to PubMed.

Community. Experiences from people who have tried Fenugreek. Anecdotes are not medical advice.

Fenugreek. Spice/herb traditionally for libido & glycemic control; modest free-T effects.

Key compound: diosgeninC27H42O3 · 414.6 g/mol

What it is

Spice/herb traditionally for libido & glycemic control; modest free-T effects.

Also called

Trigonella foenum-graecumTestofen

Food sources

Trigonella seeds

Goals

Testosterone SupportLibido & Sexual HealthBlood Sugar Management

How it works

Furostanolic saponins may inhibit aromatase and 5-AR; soluble fiber lowers postprandial glucose.

Pathways

  • 5-AR / aromatase modulation

Effects

  • +Free testosterone (small RCT) supports
  • ↓Postprandial glucose decreases

What the research supports

Improves libido and sexual functionmoderate
Lowers postprandial glucose in T2Dmoderate
Modestly raises free Tlimited

Strong: consistent results across large trials or meta-analyses. Moderate: several trials, mostly positive. Limited: small or mixed studies. Preclinical: animal or cell research only.

Typical dose
500–600 mg Testofen or 5 g whole seed
TimingConsistent daily timing recommended; split larger doses if GI tolerance is a concern.
With foodEither with or without food.
Best formMost evidence is based on the testofen (furosap) form.
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Side effects & interactions

Common side effects

  • Maple-syrup body odor
  • GI upset

Medication interactions

Warfarinmoderate

Coumarins.

Antidiabeticsmoderate

Hypoglycemia.

Check any supplement–medication combination with your pharmacist before starting.

Combines with

Pairs well

  • A high-quality multivitaminCovers micronutrient cofactors that support most supplement pathways.
  • Omega-3 (EPA/DHA)Foundational anti-inflammatory support that complements most regimens.

Avoid combining

  • PregnancyUterine stimulant.

Common forms

  • Testofen (Furosap)
  • Fenugreek seed powder

Key studies

10 studies cited in total.

PubMed: Fenugreek — Improves libido and sexual function ↗
Systematic review · PubMed (NLM) · 2026

Opens current human and preclinical literature matching Fenugreek and "Improves libido and sexual function". Filter by RCT, meta-analysis, or year on the results page.

PubMed: Fenugreek — Modestly raises free T ↗
Systematic review · PubMed (NLM) · 2026

Opens current human and preclinical literature matching Fenugreek and "Modestly raises free T". Filter by RCT, meta-analysis, or year on the results page.

PubMed: Fenugreek — Lowers postprandial glucose in T2D ↗
Systematic review · PubMed (NLM) · 2026

Opens current human and preclinical literature matching Fenugreek and "Lowers postprandial glucose in T2D". Filter by RCT, meta-analysis, or year on the results page.

Discussion

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