Wild Yam (Dioscorea villosa)
Photo: H. Zell · CC BY-SA 3.0
- Skeletal
- 1 condition
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Overview
Wild yam (Dioscorea villosa) is a twining vine growing to about 20 ft (6 m), with heart-shaped leaves and small greenish-yellow flowers. It has traditionally been used for its antispasmodic and anti-inflammatory properties for menopausal symptoms, digestive complaints, muscle spasm, and joint pain; MSK says studies in humans are quite limited and more research is needed.
Traditional uses & properties
Spasms (traditional use): Traditionally used for cramping and digestive pains; MSK says studies in humans are quite limited and more research is needed. Joints (traditional use): Traditionally used for joint pain and rheumatoid arthritis; MSK says more studies are needed to confirm whether wild yam has any benefits. Hormones: Diosgenin from wild yam has been used as raw material for synthetic progesterone, but MSK says there is no evidence that the human body can convert diosgenin into progesterone.
Safety & precautions
Overdose: May cause nausea, vomiting, diarrhea. Contrary to Myth: It is not a natural source of progesterone in the human body; the hormone-like compounds do not convert to progesterone internally. General Use: Consult a professional for long-term or high-dose use.
Educational reference only - not medical advice. Herbs can interact with medications. Consult a qualified healthcare provider before use. Full disclaimer.
Drug interactions
Interaction data is not available for this herb - talk to a pharmacist before combining it with any medication. A blank entry here means we have not documented interactions, not that none exist.
Habitat
Native to North and Central America, wild yam is now naturalized in temperate to tropical regions worldwide. It’s typically started from seeds in spring or root division in autumn, flourishing best under sunny conditions in rich soil. The root and tuber are harvested in autumn.
Sources
The interaction notes and the statements on this page that name a source were written by HerbMate from these references, which were last checked in October 2026. They are summaries, not medical advice; ask a pharmacist about your own medicines.
Traditionally used for
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Frequently asked questions
What is Wild Yam (Dioscorea villosa) traditionally used for?
Traditional sources describe Wild Yam (Dioscorea villosa) as follows: Spasms (traditional use): Traditionally used for cramping and digestive pains; MSK says studies in humans are quite limited and more research is needed. Joints (traditional use): Traditionally used for joint pain and rheumatoid arthritis; MSK says more studies are needed to confirm whether wild yam has any benefits. Hormones: Diosgenin from wild yam has been used as raw material for synthetic progesterone, but MSK says there is no evidence that the human body can convert diosgenin into progesterone.
What safety cautions apply to Wild Yam (Dioscorea villosa)?
Overdose: May cause nausea, vomiting, diarrhea. Contrary to Myth: It is not a natural source of progesterone in the human body; the hormone-like compounds do not convert to progesterone internally. General Use: Consult a professional for long-term or high-dose use.
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