Educational information, not medical advice — ask your doctor or midwife.
What is hog plum bark?
Hog plum bark is the bark of Spondias mombin, a tall fruit tree that grows across West Africa. The Yoruba name for the tree is iyeye. Healers have long boiled the bark in water to make a drink or a skin wash.
The fruit is an ordinary food in many markets. The bark is the part used as medicine. It is sold as cut bark, as powder, and now and then in capsules.
It is most often used for wounds, loose stools and sore mouths. Some people also take it for fever or cough.
Here is the honest verdict. Human evidence is very thin, and almost all of the research sits in test tubes and animals. Long traditional use is not proof that it works, and it is not proof that it is safe.
How is it supposed to work?
No one has shown what hog plum bark does inside the human body. The ideas below come from lab and animal work only.
The bark is rich in tannins. In test tubes, tannins bind to proteins and tighten the surface they touch. That may be why the bark tastes dry and why tradition used it as a wash.
In laboratory tests, bark and leaf extracts slow the growth of some bacteria and yeasts. Whether that happens on human skin or in the gut is not known.
In rodents, extracts have slowed gut movement and reduced loose stools. These results have not been repeated in people.
Animal studies have also shown a drop in blood sugar after large doses. That signal matters mainly as a warning for people on diabetes medicine.
Cell studies report that extracts can block herpes virus in a dish. That is a long way from a treatment for anyone.
So the short answer is simple. The bark contains compounds that do things in a lab. Nobody has shown that those effects carry over into a person.
What forms does it come in?
In West Africa the bark is most often boiled at home. Packaged products are far less common, and quality checks are rare.
The usual forms are:
- A decoction (bark boiled in water) taken as a drink or used as a wash.
- Dried cut bark or bark powder, sold loose in markets.
- Capsules of powdered bark, sold by a small number of online sellers.
- Tinctures, which are extracts soaked in alcohol. These are rare.
- Fresh bark pounded into a poultice (a soft paste spread on the skin).
Two practical points are worth knowing. Market bark is sometimes mixed with or sold in place of other tree species. Loose plant material can also carry mould or dirt.
If you buy it, look for a product that names Spondias mombin in full on the label. A batch number and a supplier address are good signs. Neither one proves the contents are safe.
Where does it come from?
Hog plum has been used in West African medicine for generations, well before written records of it existed. The Yoruba call the tree iyeye, and both bark and leaf had a place in home care.
Healers boiled the bark and used the liquid to wash wounds, sores and burns. The same liquid was given for loose stools and stomach pain. Bark and leaf were also used for sore gums and mouth ulcers.
The leaf had a separate and serious use. It was given in some communities to bring on labour or to speed it up. That history is a reason for pregnant readers to stay away from the whole plant.
The tree spread with trade into the Caribbean and parts of South America. Similar uses appear in folk practice there. These are old customs, not tested treatments, and this page does not suggest copying them.
Short answer: Avoid: traditionally used to stimulate the womb.
Educational information, not medical advice — ask your doctor or midwife.
Stop taking it and speak to a doctor or pharmacist if you get stomach pain, repeated vomiting, or a rash.
Get medical help the same day if:
- Diarrhoea lasts more than two days, or has blood in it.
- A wound turns red, swollen, hot, or leaks pus.
- You have a fever that does not settle, especially in a malaria area.
- Your skin or eyes turn yellow, or your urine goes very dark.
- You feel shaky, sweaty or confused and you take diabetes medicine.
Call emergency services for swelling of the lips, tongue or throat, or trouble breathing. That is a severe allergic reaction.
In the United States, hog plum bark may be sold as a dietary supplement. It is not approved by the FDA as a medicine for any condition.
In the UK and the EU it has no licence as a herbal medicine. In Nigeria and Ghana it is sold openly in markets, and packaged herbal products fall under national regulators such as NAFDAC.
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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