Educational information, not medical advice — ask your doctor or midwife.
Anthyllis vulneraria, or kidney vetch, is a small yellow-flowered plant in the pea family. The dried flowers and flowering tops are the parts used. Folk healers used them mainly as a wound wash and a mild tea.
It grows on chalky grassland, dunes and dry slopes. Its range covers Europe, North Africa and parts of western Asia. The old Latin name vulneraria simply means "wound healer".
Here is the honest verdict. There are no good human trials of this plant for any condition. Long traditional use tells you people trusted it; it does not prove that it works, and it does not prove that it is safe.
No one has shown in people how this plant acts, or whether it acts at all.
The usual explanation points to tannins. Tannins are plant compounds that bind proteins in test tubes.
That binding makes a plant feel drying, or astringent, in the mouth. Traditional writers took this as the reason for its use on raw skin and sore gums.
Laboratory work on extracts of kidney vetch and related plants has reported antioxidant activity. That means the extract mops up reactive molecules in a dish. Whether this changes anything on your skin or inside your body is not established.
Saponins are also present. In test tubes, saponins can foam and can disturb cell membranes. This is sometimes described as a cleansing action on wounds, but that step has not been tested properly in people.
Treat every one of these as a lab idea, not a proven effect.
Kidney vetch is sold mostly as a dried herb, not as a modern supplement.
Common forms are:
- Loose dried flowers for a tea or infusion. - Part of a blended herbal tea, often with other European meadow herbs. - A cooled infusion used as a mouth rinse or gargle.
- A cloth compress soaked in the cooled tea and laid on intact skin. - A tincture, an alcohol extract, sold by a few herbal suppliers.
Capsules and standardised extracts are rare. Products are not tested for strength the way a medicine is. Wild-picked material can also be mixed up with lookalike plants.
Kidney vetch has a long place in European folk medicine. Its name has meant "wound herb" since at least the medieval period.
Country healers packed the crushed or dried flowers onto cuts and grazes. The flowers were also brewed as a tea for coughs and for an upset stomach. In Alpine regions the flowers went into mixed meadow teas.
The plant appears in listings of medicinal plants used across Europe and North Africa. Records describe use, not results. None of this history was gathered as evidence, and it is not a reason to treat a wound yourself.
Stop using it and get medical help if any of these happen.
- Lip, tongue, face or throat swelling, hives, or trouble breathing. Call emergency services at once. - A wound that spreads redness, weeps pus, or becomes more painful. - A fever, chills, or a red streak running from a wound. - A rash or burning where you applied a compress. - A cough lasting more than three weeks, or coughing up blood. - Mouth soreness lasting more than two weeks. - Diarrhoea that is severe, bloody, or lasts more than two days.
Tell your doctor or pharmacist that you have been using a herbal product.
Kidney vetch is not approved as a medicine in the United States, the United Kingdom or the European Union. There is no European Medicines Agency herbal monograph for it.
In the United States it may be sold as a dietary supplement or herbal tea, which means it is not tested for effect before sale. In the UK and EU it is sold mainly as a dried herb or tea ingredient.
Evidence grades and traditional-use labels are explained in our methodology. Nothing here is medical advice.
What it is typically used for, usual dose, cautions, and the study behind it where real trial data exists.
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