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Fenugreek

Trigonella foenum-graecum, seed extract with 50% saponins

A curry spice that smells of maple syrup, and can make you smell of it too.

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A fenugreek capsule
Builds up
Weeks to months
In your body
Not known
Per 1 capsule
500 mg
30-day supply
$5.40One capsule a day, plus packing and delivery

What is fenugreek?

Fenugreek is a clover-like herb from the Mediterranean, southern Europe and western Asia. Its seeds have been used as a spice and a medicine for about 6,000 years, and they're still common in curries.

Ours is a seed extract standardized to 50% saponins, soapy plant compounds thought to be among its active parts.

People take it today for all kinds of reasons: blood sugar, testosterone, menopause and breast milk. Some of those have more to stand on than others, so it's worth reading closely.

What it does

  • Blood sugarHelps maintain blood sugar already in the healthy range.
  • Male vitalitySupports vitality and sexual wellbeing in men.
  • Women's wellbeingTraditionally used to support comfort through the menstrual cycle and menopause.

These statements have not been evaluated by the FDA. This product is not intended to diagnose, treat, cure or prevent any disease.

The full guide · 16 min readFenugreek benefits, side effects and how to take it: what the evidence showsWhich form, how much, when to take it, and whether it's worth it, with the studies behind each answer.

What people take it for

How long it takes

This one takes patience. The longest studies ran for 12 weeks, and testosterone was measured at the end of that. In the blend study, women felt a difference from about 2 weeks.

When studies saw changes, over 12 weeksTypical pattern
First changes at about 2 weeks
As far as most studies went
Start12 weeks
  1. HoursFenugreek can blunt the rise in blood sugar after a meal
  2. About 2 weeksWhen women in the blend study started to feel a difference
  3. 12 weeksWhen most studies took their final reading

How long it stays in your body

There's no clean number in people, since it's a mix of compounds. You may notice one of them leaving, though: the maple smell in your sweat and urine.

What's in a capsule

One capsule holds 500 mg of extract. One testosterone study used 600 mg a day of another extract, and a study in women used 1,000 mg. Blood sugar studies often used grams of whole seed, which isn't comparable to one capsule. Our label suggests taking it with meals.

The maple syrup mystery, and why it matters

The sweet smell comes from a compound called sotolon, which is also in maple syrup. Your body passes it into sweat and urine, and possibly breast milk too. It's harmless, but it once caused real alarm: babies born to mothers who took fenugreek during labor smelled of maple, and doctors suspected maple syrup urine disease, a serious inherited condition. They didn't have it.

Fenugreek also has a lot of fiber, up to about half its weight, and a gel-like substance called mucilage. A US government liver reference points out that this fiber, along with possible estrogen-like and blood-thinning effects, is why it might interact with medicines. The same reference says it hasn't been tied to liver injury, despite how widely it's used.

What it does to hormones is the most talked-about part and the least settled. It contains diosgenin, a plant steroid. A 2026 review of men found a small rise in total testosterone, called the evidence very uncertain, and said it doesn't support testosterone-boosting claims. That's the fair way to think about it.

Read the full guide to fenugreek

What it interacts with

Goes well with

Side effects

  • Diarrhea, nausea, gas and other stomach upset.
  • A maple syrup smell in your sweat and urine. It's harmless.
  • Allergic reactions, which can be serious. Asthma can get worse in some people.
  • Large amounts can drop blood sugar. A fall in potassium has also been reported.

Check first if

  • Pregnancy: not safe beyond amounts in food. It has been linked to birth defects in animals and people. If you could be pregnant or are trying to conceive, talk to your doctor before taking it.
  • Breastfeeding: many people try it for milk, but safety data is limited, and many users in one survey reported a reaction. Ask your doctor.
  • Allergy to peanuts, chickpeas or other legumes: it may cross-react, so avoid it or ask first.
  • Diabetes or blood thinners: talk to your doctor first.
  • Hormone-sensitive conditions: ask first, given its possible estrogen-like effects.

The blood tests that go with it

Work it out

A single drop of blood on a fingertipBlood sugar · CalculatorA1C calculatorAverage glucose to A1C, and back.A clean fork and an empty plate, composed like jewelleryBlood sugar · CalculatorHOMA-IR calculatorInsulin resistance from fasting glucose and insulin.Raised veins over a strong forearmHormones · CalculatorFree testosterone calculatorFree and bioavailable, from total and SHBG.

Supplementation

Or start from a ready-made protocol.

Start from one of these, or add it to your own. Everything comes in one pouch each morning.

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  • cGMP-certifiedFacilities
  • FDA-registeredFacilities
  • Accredited labsIndependent testing
  • Non-GMOIngredient options
  • OrganicIngredient options
  • VeganFormula options

These statements have not been evaluated by the Food and Drug Administration. These products are not intended to diagnose, treat, cure or prevent any disease.

Want it more precise? Get the app.

A page can only tell you about Fenugreek. The app tells you about you: whether it fits, when to take it, and whether it's working.

  • Checked against your blood work and everything you already take
  • On your daily timeline, around your sleep, training and meals
  • Followed over time, so you can see what moved
Download the appStart on the web
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Fenugreek against your blood work, your sleep and what you already take.

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Your fasting glucose has crept up, and you also take a blood thinner. Worth asking your doctor before you add fenugreek?

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People take it for

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Your record, your routine and LifeFrom AI, pointed at the outcome that matters to you.

Lose fat, keep muscleMetabolismLose fat, keep muscleFor testosteroneHormonesFor testosteroneThrough menopauseHormonesThrough menopause

Questions

What is fenugreek good for?

Mostly blood sugar. People also take it for testosterone, menopause and breast milk, though the evidence there is thinner or mixed.

How long does fenugreek take to work?

Think weeks. Most studies ran up to 12 weeks, though women on a fenugreek blend started noticing a difference from about 2 weeks.

What are the side effects of fenugreek?

Mostly stomach upset, gas and diarrhea, and a maple smell in your sweat and urine. Allergic reactions and a blood sugar drop can also happen.

Who should not take fenugreek?

Anyone pregnant, since it isn't safe beyond food amounts. If you have a legume allergy, diabetes, or take blood thinners, talk to your doctor first.

Does fenugreek increase testosterone?

Perhaps a little. Reviews found a small rise in total testosterone but no clear change in free testosterone. The evidence doesn't support it as a testosterone booster.

Does fenugreek make you smell like maple syrup?

Yes, it can. A compound called sotolon comes out in your sweat and urine. It's harmless.

Does fenugreek increase breast milk?

It's not clear. Studies are mixed, and one review found no good evidence, while another found a mild effect. Safety data is limited, so talk to your doctor or a lactation specialist.

Can I take fenugreek every day?

That's how most studies gave it, for up to about 3 months. We know less about longer use.

Is fenugreek good for women?

Women take it for period cramps and menopause. The research on both is limited, and it isn't safe in pregnancy, so check first if that's possible for you.

Does fenugreek lower blood sugar?

In people with diabetes, yes, it seems to, especially at higher amounts of whole seed. Most of those trials were low quality, and it can add to the effect of diabetes medicines.

Sources
  1. NIH National Center for Complementary and Integrative Health. Fenugreek.
  2. NIH LiverTox. Fenugreek.
  3. NIH Drugs and Lactation Database (LactMed). Fenugreek.
  4. Neelakantan N et al. Effect of fenugreek (Trigonella foenum-graecum L.) intake on glycemia: a meta-analysis of clinical trials. Nutr J, 2014.
  5. Yang P et al. Effects of oral fenugreek-derived preparations on testosterone-related outcomes in adult men: a systematic review and meta-analysis of randomized placebo-controlled trials. Front Nutr, 2026.
  6. Isenmann E et al. The Anabolic Effect of Fenugreek: A Systematic Review with Meta-analysis. Int J Sports Med, 2023.
  7. Rao A et al. Testofen, a specialised Trigonella foenum-graecum seed extract reduces age-related symptoms of androgen decrease, increases testosterone levels and improves sexual function in healthy aging males in a double-blind randomised clinical study. Aging Male, 2016.
  8. Kashinath RN et al. Dose-Dependent Efficacy of a Combined Standardized Extract of Fenugreek and Shatavari on Menopausal Symptoms: A Randomized, Double-Blind, Parallel, Placebo-Controlled Study. Womens Health Rep (New Rochelle), 2026.
  9. Singh A et al. Efficacy of a Proprietary Fenugreek Seed Extract (Trigonella foenum-graecum, Furocyst®) in Women with Polycystic Ovary Syndrome (PCOS): a Randomized, Double-Blind, Placebo-Controlled Study. J Am Nutr Assoc, 2023.
  10. Lambert JP et al. Potential interaction between warfarin and boldo-fenugreek. Pharmacotherapy, 2001.
  11. Korman SH et al. Pseudo-maple syrup urine disease due to maternal prenatal ingestion of fenugreek. J Paediatr Child Health, 2001.
  12. Podebrad F et al. 4,5-dimethyl-3-hydroxy-2[5H]-furanone (sotolone)--the odour of maple syrup urine disease. J Inherit Metab Dis, 1999.
  13. Majumdar J et al. Fenugreek, A Potent Hypoglycaemic Herb Can Cause Central Hypothyroidism Via Leptin - A Threat To Diabetes Phytotherapy. Exp Clin Endocrinol Diabetes, 2017.

Written by LifeFrom from these sources, and not yet reviewed by a clinician. Talk to your doctor before starting a supplement.

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