Wild Yam (Dioscorea villosa)
Photo: H. Zell · CC BY-SA 3.0
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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. Historically used in Central America for menstrual and labor pain, it is commonly recognized in modern herbalism as an antispasmodic and anti-inflammatory remedy to ease menstrual cramps, colic, and various arthritic or neuralgic pains.
Traditional uses & properties
Antispasmodic & Analgesic (Anodyne): Relieves menstrual cramps, colic, irritable bowel, and gripping intestinal pains. Anti-Inflammatory: Alleviates discomfort in arthritic and rheumatic conditions. Digestive Support: Helpful in gallbladder or bowel inflammation (like IBS, diverticulitis). Hormonal Misconception: While its steroidal saponins have been industrially processed into synthetic hormones, wild yam itself does not act as progesterone in the body.
Traditional preparations
Traditional texts describe the preparations below, and where those texts give specific amounts, the amounts are quoted here as part of that record. This is a record of historical practice, not a dosage recommendation - the figures are what the sources say, not what HerbMate tells you to take. Amounts, potency, and safe use vary enormously by preparation, plant part, and person.
Fresh root (1:2, 95% alcohol); dried root (1:5, 60% alcohol); 10 drops to 3 ml (0.6 tsp.) 3 times daily
Simmer long enough for decoction to release soapy bubbles, turn red, and smell like Christmas; 3-6 ounces 3 times daily
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: Safe short-term at standard doses, but consult a professional for long-term or high-dose use.
Drug & food 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.
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: Antispasmodic & Analgesic (Anodyne): Relieves menstrual cramps, colic, irritable bowel, and gripping intestinal pains. Anti-Inflammatory: Alleviates discomfort in arthritic and rheumatic conditions. Digestive Support: Helpful in gallbladder or bowel inflammation (like IBS, diverticulitis). Hormonal Misconception: While its steroidal saponins have been industrially processed into synthetic hormones, wild yam itself does not act as progesterone in the body.
How is Wild Yam (Dioscorea villosa) prepared?
Traditional texts describe the preparations below, and where those texts give specific amounts, the amounts are quoted here as part of that record. This is a record of historical practice, not a dosage recommendation - the figures are what the sources say, not what HerbMate tells you to take. Amounts, potency, and safe use vary enormously by preparation, plant part, and person. TINCTURE: Fresh root (1:2, 95% alcohol); dried root (1:5, 60% alcohol); 10 drops to 3 ml (0.6 tsp.) 3 times daily STANDARD DECOCTION: Simmer long enough for decoction to release soapy bubbles, turn red, and smell like Christmas; 3-6 ounces 3 times daily
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: Safe short-term at standard doses, but consult a professional for long-term or high-dose use.
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