Wild Yam
Useful mainly for no use is well supported; marketed claims are not backed by pharmacology.
Quick decision guide
May help most
no use is well supported; marketed claims are not backed by pharmacology
Common dosing range
200–500 mg extract 1–3×/day, or 1–3 g dried root (traditional)
When to expect effects
Not established
Watch out for
topical 'wild yam creams' have been found adulterated with synthetic progesterone
What is it
Wild yam most commonly refers to Dioscorea villosa , a North American climbing vine in the Dioscoreaceae family, although related species such as D. opposita , D. polystachya , and D. floribunda are also marketed under the name. The rhizome contains steroidal saponins, chiefly dioscin, which yields the sapogenin diosgenin on hydrolysis. Diosgenin is the historical industrial starting material for the laboratory synthesis of progesterone, cortisone, and other steroid drugs, but the human body cannot convert ingested diosgenin or dioscin into bioactive steroid hormones. Marketing claims that wild yam provides "natural progesterone" or similar effects are not supported by pharmacology.
Is it worth it for you?
Use this as a quick fit check, not a diagnosis.
Worth considering if…
Probably skip if…
Evidence at a glance
| Goal | Effect | Best fit | Time |
|---|---|---|---|
menopausal and PMS symptoms Mixed Evidence | No demonstrated effect | no population is well supported | Not established |
menopausal and PMS symptoms
- Effect
- No demonstrated effect
- Best fit
- no population is well supported
- Time
- Not established
Evidence for 1 use
AI-assisted evidence assessment — talk to your doctor before relying on any single supplement.
menopausal and PMS symptoms
Supplement benefitWild yam contains diosgenin, an industrial precursor for laboratory steroid synthesis, but the human body cannot convert ingested diosgenin or dioscin into progesterone or other active hormones. The few studies in menopausal and PMS symptoms show no benefit over placebo. Marketing claims of 'natural progesterone' are not supported, and some topical creams have been found to contain undeclared synthetic progesterone.
Bottom line: Wild yam does not provide hormonal effects and has not been shown to relieve menopausal or PMS symptoms.
Evidence is mixed
Marketing implies hormonal benefit, but pharmacology and the available trials do not support any effect; apparent effects from some creams trace to undeclared added steroids.
How to take it
What to track
Safety
Know the common side effects, key cautions, and who should avoid it.
Common side effects
Serious risks
exposure to undeclared synthetic progesterone or steroids in some adulterated creams
Who should avoid it
- pregnant or breastfeeding women
- people on hormone therapy (risk from adulterated products)
Pregnancy & breastfeeding
Safety is not established; traditional sources advise avoidance.
Interactions
the herb itself has no demonstrated interaction, but adulterated products may contain active steroids
Choosing a product
What to look for on the label — and what to be skeptical of.
Look for…
Be skeptical of…
References by claim
Track Wild Yam with Pilora
Set up dose reminders, check interactions, and join the community in the Pilora iPhone app.
Coming to App StoreDisclaimer: These statements have not been evaluated by the FDA. This page is educational, not a substitute for personalized medical advice. Evidence grades are AI-assisted assessments — talk to your doctor before starting any new supplement, especially if you’re pregnant, breastfeeding, on medications, or managing a chronic condition.