Fenugreek Seed Extract (Testofen)
Also known as: Testofen, fenugreek 50% fenusides, Trigonella foenum-graecum extract (Testofen)
A branded fenugreek seed extract standardized to 50% fenusides, a saponin glycoside fraction, developed for men's vitality products. A six-week randomized trial in healthy men taking 600 mg per day reported improvements in self-rated libido and sexual function scores. It is the most recognized fenugreek ingredient in the testosterone-support category, though its effects on hormone levels themselves are modest and inconsistent across studies.
Research summary
Fenuside saponins are proposed to influence androgen availability and reduce aromatase activity, although human hormone data are mixed.
Dosage
Daily amounts, of extract.
| Lowest studied | Typical range | Highest studied | Upper limit |
|---|---|---|---|
| 600 mg | 600 mg | 600 mg | — |
600 mg per day, taken as 300 mg twice daily with meals in the published trial, for at least six weeks. Fenugreek can impart a maple-like body odor at higher intakes.
Standardization: 50% fenusides
Source material: seed extract
Forms of Fenugreek
| Form | Typical dose | Element % | Formats | Price |
|---|---|---|---|---|
| Fenugreek Seed Extract (Testofen) | 600 mg | — | Capsule, Tablet, Powder | high |
| Fenugreek Seed Extract | 500–600 mg | — | Capsule, Tablet, Powder | low |
Format suitability
- Capsule
- Powder
- Tablet
- Softgel
- Gummy
- Liquid
Maple-like, bitter flavor; capsule or tablet preferred.
Formulation notes
Usually paired with zinc, magnesium, or tongkat ali. Fenugreek may add to glucose-lowering effects and is generally avoided in pregnancy.
- Not for pregnancy
Sources
Related ingredients
Fenugreek Seed Extract
BotanicalA generic seed extract of fenugreek, a legume used both as a spice and in traditional medicine.
Typical: 500–600 mg
Ashwagandha Root Extract (KSM-66)
BotanicalA branded, root-only ashwagandha extract standardized to at least 5% withanolides.
Typical: 300–600 mg
Tongkat Ali Root Extract
BotanicalA root extract from a Southeast Asian shrub used in men's vitality, stress, and libido formulas.
Typical: 200–400 mg
L-Arginine
Amino acidA conditionally essential amino acid and the direct substrate for nitric-oxide synthase.
Typical: 3–6 g
Tribulus Terrestris Extract
BotanicalA fruit and aerial-part extract standardized to steroidal saponins, marketed heavily for testosterone and muscle building.
Typical: 500–1,500 mg