Educational information, not medical advice — ask your doctor or midwife.
Cistus canadensis is a homeopathic remedy made from a small North American plant, Helianthemum canadense. The plant is also called rock rose or frostwort. It is a single drug remedy, which means it comes from one source, not a blend.
Homeopaths have used it for swollen neck glands, sore throats and a deep feeling of cold. The remedy is serially diluted, which means the plant is watered down again and again in steps. At 30C almost none of the source plant is left, and in most cases none at all.
Here is the short verdict. Trials do not show that it works better than a placebo (a dummy pill). Long use in a tradition is not proof that a thing works; we say that here once, and not again in each section.
There is no known way for this remedy to act in the body. At 30C there is no plant left to act on you. Any change people feel is best put down to the placebo effect, to time, and to feeling cared for.
Homeopathy rests on two ideas. The first is that a substance which causes symptoms in a well person can treat like symptoms in a sick person. The second is that shaking and watering down makes a remedy stronger.
Neither idea fits what we know about the body or about chemistry. That does not make the tradition dishonest. It does mean you should not expect a drug-like effect.
The most common forms are small sugar pills and liquid drops. Drops are made with water and alcohol. Common strengths on the label are 6C, 30C and 200C.
One form is different. The mother tincture (the plain plant extract, marked with the sign Ø) and low strengths such as 1X or 3X still hold real plant matter. Use those only with a trained practitioner.
Rock rose grows in dry, sandy soil in eastern North America. Folk healers used the leaf on skin sores and for swollen neck glands. A leaf tea was also taken for sore throats.
Homeopaths took the plant up in the 1800s. It sits in the old remedy books as a small entry, not a leading one. Its use rests on those early case notes, not on trials.
See a doctor if a swollen gland lasts more than two weeks, keeps growing, or feels hard and fixed in place. Get care the same day for a fever over 38.5C, night sweats, weight loss you did not plan, or a sore throat so bad you cannot swallow your own spit. Get emergency help for trouble breathing, drooling, or swelling that closes the throat.
Evidence grades and traditional-use labels are explained in our methodology. Nothing here is medical advice.
Reviewed by the HealisticMD editorial team How we grade evidence →
The published evidence for Cistus canadensis is weak or absent. That usually means no controlled trial has tested it, not that a trial found it ineffective — the two are different, and we grade only what has been published.
What it is typically used for, usual dose, cautions, and the study behind it where real trial data exists.
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