Educational information, not medical advice — ask your doctor or midwife.
Hierba del golpe is a folk remedy made from Oenothera rosea, the rose evening primrose. It is a small plant with pink flowers, native to Mexico, Central America and the Andes. The leaves, stems and flowers are used fresh or dried.
The name means "herb of the blow". Healers used it after a knock, fall or sprain. It was taken as a tea or laid on the skin as a poultice.
Here is the honest verdict. Human trials are almost absent, so we cannot say it treats anything. Long use in tradition is not proof that it works, and it is not proof that it is safe.
No one has shown how this plant acts in the human body. Almost all the claims come from test tubes and rodents.
In animal tests, extracts have eased swelling and pain behaviour. In test tubes, they slow the growth of some bacteria. They also mop up free radicals, the unstable molecules that damage cells.
The plant is high in tannins. In lab work, tannins bind proteins and tighten the surface of a raw wound. Whether that helps a real bruise or cut heal faster is not known.
Some animal work points to a fall in blood sugar. That effect has never been checked properly in people. It still matters, because it hints at a drug interaction risk.
It is sold mostly as the dried aerial parts, meaning leaves, stems and flowers. Mexican markets sell it loose by weight.
Common forms include: - Loose dried herb, brewed as a tea (infusion) - Fresh leaves crushed into a poultice for a bruise - A cooled wash or compress for sore skin - Tinctures, which are alcohol extracts taken in drops - A few creams and ointments made for skin use
Products are rarely standardised. Labels often fail to say how much plant material is in a dose.
Quality control in street markets is weak. Dried herbs can be mislabelled or mixed with other species. Buying from a named, tested supplier lowers that risk.
Hierba del golpe has a long standing in Mexican folk medicine. Healers reached for it after a blow, a fall or a sprain. That use gave the plant its name.
Old sources and market surveys list other past uses. These included diarrhoea, wounds, kidney and bladder complaints, and recovery after childbirth.
The plant appears in Mexican herbal listings from the colonial era onward. It stayed a common household herb in central and southern Mexico. It is also used in parts of Peru and Bolivia.
Stop using it and see a doctor if any of these happen:
- Rash, itching, swelling of the face or lips, or trouble breathing - Belly pain, lasting nausea or vomiting - Yellow skin or yellow eyes - Shaking, sweating or confusion, which can mean low blood sugar - A wound that turns red, hot, swollen or leaks pus - Diarrhoea with blood or fever, or lasting over two days
Get emergency care after a bad injury with severe pain, numbness, a limb that looks bent, a head knock with vomiting, drowsiness or confusion.
In Mexico it is sold openly as a traditional herbal remedy and in markets. In the United States it may be sold as a dietary supplement, and it is not an approved drug. In the UK, the EU, Canada and Australia it is not authorised as a medicine.
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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