Herb & supplement monograph

Wild Yam Drug Interactions, Uses, Effectiveness, Safety & More

Medically reviewed by Dr. Brian Staiger, PharmD, BCPS ·Updated July 2026

What is this page for?

First and foremost: how Wild Yam interacts with medications. The heart of this page is the interaction list — every drug Wild Yam is known to interact with, and how serious each one is.

But these pages have grown well beyond that into a full monograph — what Wild Yam is, what people use it for and how strong the evidence is, its safety and side effects, and answers to the questions we’re asked most — written and reviewed by the clinical staff at HelloPharmacist. It’s educational information from our licensed clinical databases, not medical advice, and we don’t sell or endorse products. Our editorial policy

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On this page

Wild Yam Drug Interactions: The Bottom Line

From the HelloPharmacist Editorial Team · Updated July 2026

Based on the available evidence, the overall risk of a clinically significant Wild Yam drug interaction appears low for most people. None of the listed interactions are rated major, and every one of them rests on lab research rather than documented effects in people.

Interactions deserving the most attention

The one concern worth knowing about involves estrogens. In lab studies, wild yam root has shown both estrogen-like and estrogen-blocking activity, so in theory it could strengthen or weaken these medicines. That makes it sensible to be cautious if you take hormone therapy, where a shift in effect could matter. No interaction with any other type of medication stands out from the evidence.

What the rest of the list means

Although the number of medications flagged may look large, they all trace back to this single hormonal question. The effect has only been observed in laboratory tests, not confirmed in human studies, so a listed interaction does not mean the combination has actually caused problems. Theoretical findings like these often do not translate into meaningful changes in people.

Check your medications against Wild Yam

Based on HelloPharmacist’s Wild Yam interaction data and reviewed under our editorial standards.

Interaction report

Drugs that interact with Wild Yam

41 medications have a known interaction with Wild Yam, graded by severity. Select any drug for the full evidence-based detail.

Don’t want to scroll the list? Just ask.

Tell us the medications you take and we’ll check each one against Wild Yam using our pharmacist-reviewed interaction data.

AI summaries are generated from our Wild Yam interaction data for education only — always confirm with your pharmacist. How we use AI

2,830 drugs

Read The List Like a Pharmacist

What Severity, Likelihood & Evidence Mean

Severity — How Serious It Can Be

Major. Clinically significant; generally best avoided, or used only under direct professional supervision.
Moderate. May need monitoring, a dose adjustment, or separating the times you take each one.
Minor. Generally not clinically significant, but still worth noting and mentioning to your pharmacist.
No known interaction. Checked against our sources with nothing documented — not the same as proven safety.

Likelihood — How Well It’s Documented

Likely. Well-controlled human studies have demonstrated the likely existence of this interaction
Probable. Interaction has not been documented in well-controlled studies, however, the interaction has been demonstrated in some small human studies or in controlled animal studies in conjunction with multiple case reports.
Possible. Interaction has been documented in animal or in lab research, or the interaction has been documented in humans but is limited to case reports or conflicting clinical research exists
Unlikely. Interaction has been demonstrated in animal or in lab research but has been shown not to occur in humans.

Where This Data Comes From

Interaction records are evidence-graded and sourced from the Natural Medicines database (TRC Healthcare), the same reference used by pharmacists and hospitals.
Each drug listed above links to the full report for that exact Wild Yam combination — clinical detail, likelihood, evidence level, and citations.
Content is reviewed by licensed HelloPharmacist pharmacists — see our data sources and editorial standards.

The big picture

The kinds of drugs Wild Yam affects

Every type of medication (drug category) Wild Yam is known to interact with. Open any category for the detail — or search your exact drug in the checker above.

All 1 drug category Wild Yam interacts with

Estrogens

Theoretically, wild yam might increase or decrease the effects of estrogen.
Wild yam root shows estrogenic and anti-estrogenic effects in vitro. Theoretically, wild yam might interfere with hormone therapy.

Likelihood Possible Evidence D

Monograph

Wild Yam: Uses, Safety & Side Effects

Medically reviewed by Dr. Brian Staiger, PharmD, BCPS · Reviewed July 2026 ·

The bottom line

Wild yam is a root traditionally used for menopausal symptoms, cramps, and as a so-called 'natural' hormone supplement, but solid human evidence for these uses is lacking. Despite popular claims, your body cannot convert its compounds into hormones like progesterone, so creams marketed that way usually don't work as advertised. Talk with a pharmacist or doctor before using it.

Scientific name: Dioscorea villosa
Family: Dioscoreaceae
Part used: Root and rhizome (underground stem)
Common forms: Capsules, tablets, dried root, tinctures, topical creams, tea

People commonly use it for

Menopausal symptoms
Menstrual cramps
Hormone balance (popular belief)
Digestive cramps
Joint and muscle discomfort

Popular and traditional uses — not proof it works. See “Uses & effectiveness” below for the evidence.

Safety at a glance

OverallUse caution

Likely fine for short-term use in healthy adults, but long-term safety is not well studied.

PregnancyInsufficient reliable information

Insufficient reliable information available; avoid using.

Read the full pregnancy detail

BreastfeedingInsufficient reliable information

Insufficient reliable information available; avoid using.

Read the full breastfeeding detail

Pregnancy & breastfeeding ratings are from Natural Medicines (Therapeutic Research Center). Safety guidance is general; always confirm with your pharmacist or doctor for your situation.

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Overview

Wild yam (Dioscorea villosa) is a twining vine native to North America. The part used in supplements is the underground root and rhizome. It is not the same as the edible yam or sweet potato you find at the grocery store.

People have used wild yam in traditional and folk medicine for many years. Today it is sold as capsules, tinctures, teas, and topical creams. It is most often marketed for menopause symptoms, menstrual cramps, and as a so-called 'natural' source of hormones.

How it works

Wild yam contains a compound called diosgenin. In a laboratory, chemists can use diosgenin as a starting material to manufacture steroid hormones like progesterone. This is an industrial chemical process — it does not happen inside the human body.

Some lab and animal studies suggest diosgenin and related compounds may have mild antioxidant or anti-inflammatory effects, but these findings have not been confirmed in well-designed human trials. The way wild yam might help symptoms in people, if at all, is not well understood.

Effectiveness

Does Wild Yam work?

Here’s what the research actually shows for each use — graded by Natural Medicines and reviewed by Dr. Brian Staiger, PharmD.

Evidence overview · 11 uses evaluated

1 Leans ineffective 10 Insufficient evidence

How to read these evidence grades

Natural Medicines’ 7-point scale. We show each rating’s label word-for-word.

1EffectiveStrong, consistent evidence it works.

2Likely EffectiveGood evidence, though not yet conclusive.

3Possibly EffectiveSome evidence suggests a benefit.

4Possibly IneffectiveSome evidence it may not help.

5Likely IneffectiveFairly strong evidence it doesn’t help.

6IneffectiveStrong evidence it doesn’t work.

7Insufficient Reliable Evidence to RateToo little research to say either way.

Possibly Ineffective Menopausal symptoms