Educational information, not medical advice — ask your doctor or midwife.
Giyayya bark is the bark of Mitragyna inermis, a small tree of the West African savannah. Hausa speakers call it giyayya. Healers across the Sahel have used the bark, root and leaf for fever, stomach trouble and wounds.
The tree is a cousin of kratom (Mitragyna speciosa). It is not the same plant. It does not contain mitragynine, the main kratom alkaloid, and it should never be swapped for kratom or used for opioid withdrawal.
Here is the honest verdict on evidence. There are no published human trials of giyayya bark. Almost everything known comes from test tubes and rodents.
Long traditional use tells you that people trusted the plant. It does not prove that the plant works, and it does not prove that it is safe. That point applies to every section below.
No one has shown how giyayya bark acts in the human body. The mechanism ideas below all come from the laboratory bench or from animals.
In test-tube work, extracts slow the growth of the malaria parasite. They also slow some bacteria and fungi. Whether any of this happens in a person who drinks a bark decoction is unknown.
In rodents, extracts have lowered blood pressure and slowed the gut. In mice, some extracts have delayed chemically induced seizures. These are animal findings, not proof of a human effect.
The bark is rich in tannins, which bind proteins and taste harsh. That binding action may explain the old use on wounds and in loose stools. It is a plausible idea, not a tested one.
Giyayya is used mostly as raw plant material, not as a packaged product.
Common forms include:
- Dried bark pieces, boiled into a decoction - Powdered bark - Root and leaf preparations, often mixed with the bark - Washes and poultices put on skin and wounds - Occasional capsules or tinctures sold online
There is no agreed strength for any of these. Online sellers sometimes market it as "African kratom". That name is wrong and misleading.
The wood is also used for mortars, tool handles and firewood, which has nothing to do with medicine.
Giyayya has been a staple of Sahelian herbal practice for generations. It was recorded in Nigeria, Niger, Mali, Burkina Faso, Senegal and Chad.
Healers prepared bark decoctions for fever and for suspected malaria. Bark and leaf washes were applied to wounds, sores and skin complaints. Preparations were also given for diarrhoea, pain and convulsions.
The plant held a place in traditional animal care too. Herders treated livestock with it in several Sahelian regions.
Ethnobotanical surveys still list it among the most cited medicinal trees in parts of West Africa. That record describes what people did. It is a history, not a set of instructions to follow at home.
Stop and see a doctor if you feel dizzy, faint, unusually tired, or if your heartbeat feels slow or odd.
Get urgent medical help for any of these:
- Fever with chills, shaking or confusion, especially in a malaria area - A fever that has not settled within 48 hours - Yellow skin or yellow eyes (jaundice) - Severe vomiting, or diarrhoea with little urine and a dry mouth - Fainting, or a seizure - A spreading rash, or swelling of the face, lips or throat
Tell the clinician exactly what you took and bring the material with you if you can.
No country licenses giyayya bark as a medicine. It is not a controlled drug and is not banned.
In the UK and the EU it has no novel food authorisation, so selling it as a food supplement is not permitted. In the United States it is not an approved drug, and products making health claims are not legal. In West Africa it is traded openly as plant material in local markets.
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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