Educational information, not medical advice — ask your doctor or midwife.
Chimaphila maculata is a small evergreen woodland plant whose leaves were used in folk medicine. You may see it sold as spotted wintergreen, striped wintergreen or spotted pipsissewa.
It grows low to the ground in dry forests. Its range covers eastern North America and the mountains of Mexico and Central America. The dark leaves have a pale stripe down the middle, which gives it its common name.
Folk healers steeped the leaves in water. The tea was taken for urinary trouble, aching joints and swelling. Mashed leaves were laid on sores and bites.
Here is the honest verdict on evidence. There are no good human trials of this plant for any condition. Long traditional use is not proof that something works, and it is not proof that it is safe.
Most of what is written about it online is copied from old herbal books. A few laboratory studies look at its chemistry. None of that tells you what it does in a person.
No mechanism for this plant has been confirmed in people. What follows is laboratory work and informed guesswork.
The leaves contain arbutin. In the body, arbutin can break down into hydroquinone, which passes into the urine. In test tubes, hydroquinone slows the growth of some bacteria.
That is the usual explanation for the old urinary uses. Whether enough hydroquinone reaches the bladder to matter has not been shown. Closely related herbs have been studied more, and even there the results are mixed.
The plant also contains chimaphilin, a yellow pigment. In laboratory tests it acts against some bacteria and fungi. Nobody has shown this happens on or inside a human body.
Leaf extracts have shown mild anti-inflammatory activity in cell and animal studies. That is a long way from easing a swollen joint in a person. Treat the joint and skin uses as untested.
The plant is also described in old texts as a diuretic (water pill). This has not been measured in a modern human trial.
This is an uncommon herb. You are more likely to find its relative, Chimaphila umbellata, on a shelf.
Forms you may come across:
- Dried cut leaf, brewed as a tea or infusion. - Alcohol tinctures and liquid extracts. - Capsules of powdered leaf, usually in mixed urinary formulas.
- Homeopathic dilutions, which contain little or no plant material. - Fresh leaf poultices in home folk practice.
Labelling is often loose. Products may name only "pipsissewa" or "wintergreen", which can mean a different plant entirely. True wintergreen oil (Gaultheria) is a separate and far more dangerous product.
Wild plants are slow-growing and are considered at risk in parts of their range. Some states and countries limit picking. Buying wild-harvested leaf is discouraged for that reason.
The plant has a long record in Native American and Appalachian folk practice. Cherokee and other groups used leaf preparations for urinary complaints, fevers and sore joints. Crushed leaves were applied to sores, blisters and insect bites.
Settlers borrowed the practice. In the 1800s, eclectic and physiomedical practitioners listed Chimaphila for the bladder and kidneys. It appeared in some older American dispensatories alongside its relative, pipsissewa.
The root was also chewed or brewed in some accounts. One folk name, rattlesnake weed, came from its use on snakebite. That use was never supported and should not be copied.
It also had a flavouring role. Related Chimaphila leaf was once used in old-style root beers. That use was for taste, not for health.
Interest faded in the twentieth century as antibiotics arrived. The plant is now a minor item in Western herbalism. Its standing rests on this record, not on trials.
Stop taking it and see a doctor if any of these happen:
- Burning when you pass urine lasts more than two days. - You develop a fever, chills or pain in your lower back or side. - You see blood in your urine. - You feel sick, lose your appetite, or your skin or eyes turn yellow. - You get a rash, blistering, or swelling of the face, lips or tongue. - You feel faint, very dizzy or unusually weak.
Go to an emergency department for swelling of the face or throat, or trouble breathing. Those signal a severe allergic reaction.
In the United States it may be sold as a dietary supplement, and it is not approved as a medicine for any condition. In the United Kingdom and the European Union there is no approved herbal monograph for it, so licensed products are not available. Wild picking is restricted in some states and provinces, as the plant is listed as rare or at risk in parts of its range.
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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