Educational information, not medical advice — ask your doctor or midwife.
Acalypha phleoides is a small wild herb from Mexico and the south-western United States. Folk healers brewed the dried leaves and stems as a tea. It was reached for most often for stomach upset and for pain.
The plant belongs to the spurge family (Euphorbiaceae). Many plants in that family have sap that stings skin and eyes. Acalypha phleoides is one of several plants sold in Mexican markets under names like "hierba del cáncer".
Here is the honest verdict on the evidence. No human trials of this plant have been published that we could find.
Long use by healers tells you people valued it. It does not tell you the plant works, and it does not tell you the plant is safe.
That point about tradition applies to every section below, so we say it once here. Treat anything you read about this herb as a tradition with little testing behind it, not as a treatment.
You will not find Acalypha phleoides in most pharmacies or big supplement shops. It moves mainly through local herb markets and small online sellers. Plant mix-ups are common in that trade, because several unrelated herbs share the same market names.
Nobody has shown how this plant acts in the human body. What follows is proposed, not proven.
Laboratory work on Acalypha species has looked at plant chemicals that calm inflammation in test tubes. Some extracts of this genus have eased pain responses in mice. Whether any of that happens in a person who drinks the tea is unknown.
Tannins are a likely part of the story. In test tubes, tannins bind proteins and can tighten irritated tissue. That is a reasonable guess for why a bitter, astringent tea might settle a gut, not a measured effect.
No study has tracked what the plant does to blood sugar, blood pressure or the liver in people. So the mechanism page stops here on purpose.
Dried aerial parts are the usual form. That means the leaves, stems and flowering tops.
You may meet it as:
- Loose dried herb, sold in bundles or bags at Mexican herb markets. - A water infusion or decoction made at home from that dried herb.
- Occasional alcohol tinctures from small herbal makers. - Rare capsule blends, where it is one name among many on the label.
Standardised extracts do not exist for this plant. No maker can tell you how much active material a given bag holds. Mislabelling is a real risk, since several market herbs share its common names.
Healers in central and northern Mexico used this herb as a household remedy. Written records of that use are thin and mostly recent.
Teas of the dried plant were taken for stomach ache, loose stools and general pain. Some sources list it among plants washed over sores or skin irritation. Market names such as "hierba del cáncer" reflect old hopes, not any tested effect on tumours.
It also appears in lists of medicinal plants of North America, where it sits as a minor regional herb rather than a widely traded one.
Stop using it and see a doctor if you get vomiting, bad stomach pain or a rash.
Get urgent care for yellow skin or eyes, dark urine, trouble breathing, or swelling of the face, lips or tongue.
See a doctor rather than continuing the herb if diarrhoea lasts over two days, if there is blood in your stool, or if pain keeps getting worse.
In the United States and the United Kingdom it is not an approved medicine. Where sold, it falls under general food supplement or herbal product rules, which do not require proof that it works. In Mexico it is traded openly as a market herb.
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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