Educational information, not medical advice — ask your doctor or midwife.
Track Yellow root / African false cotton with reminders and record whether it helped, in the app.
Yellow root is the thick underground stem of Cochlospermum planchonii, a small shrub of the West African savanna. In Hausa it is called rawaya. Inside, the root is bright yellow, and it has long been used as both a dye and a home remedy.
The usual home form is a drink made by boiling the dried root. Healers gave it for fever and malaria, for jaundice, and for liver and urine complaints. The same yellow root colours food, drinks, leather and cloth.
Here is the short verdict on the evidence. Lab and animal work looks interesting, but good human trials are few and weak. Long traditional use tells you a plant is familiar; it does not prove that it works or that it is safe.
No one has shown in good human trials how, or whether, yellow root works.
In test tubes, root extracts slow the growth of the malaria parasite. Mice given extracts have shown lower parasite counts. Whether that helps a person with malaria is not established.
Lab work also points to antioxidant activity. In rats given liver-damaging chemicals, extracts appeared to limit some of the harm. That is a long way from treating liver disease in people.
The yellow pigments and plant acids are the usual suspects for any effect. How much of them survives boiling, and how much reaches your blood, is not well mapped.
Dried root, whole or in chunks, is the usual form in West African markets.
A water decoction is the most common home preparation. The root is boiled and the yellow liquid is drunk or used as a wash.
Powdered root in sachets and capsules is sold by some herbal traders and online sellers.
The root is also sold purely as a dye for food, drinks, leather and cloth. No health claim is attached to that use.
In Burkina Faso it is one plant in a packaged herbal antimalarial called Saye. That product holds other plants as well, so its results cannot be credited to yellow root alone.
Yellow root has a long record across the savanna belt, from Senegal to Nigeria and Cameroon.
Healers in Hausa, Fulani, Yoruba and Mossi communities boiled the root for fevers thought to be malaria. It was also given for jaundice, for painful periods and for urine complaints.
The root was dug in the dry season, when the plant dies back above ground. It was then dried and stored as both medicine and dye.
Researchers in Burkina Faso moved it from folk use into formal study from the 1980s. That work led to the combination product Saye.
Stop and get medical help the same day if you have a fever that has not broken in 48 hours.
Go to an emergency department now if you have:
Confusion, drowsiness or a fit (seizure). Trouble breathing. Repeated vomiting that stops you keeping fluids down.
Also see a doctor quickly if your skin or eyes turn yellow, your urine turns dark brown, your stools turn pale, or you have pain under your right ribs. Those can be signs of liver trouble.
In the United States, the United Kingdom and the EU, yellow root is not approved as a medicine. It is sold as a dried herb or dye, with no health claim allowed.
In parts of West Africa, including Burkina Faso, a combination herbal product containing it has been sold as a registered traditional 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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