Educational information, not medical advice — ask your doctor or midwife.
What is iroko bark?
Iroko bark is the bark of Milicia excelsa, a tall West African hardwood tree. In Twi it is called odum. Healers in Ghana, Nigeria and nearby countries have long used the bark, leaves and milky sap.
The bark is stripped from the trunk and dried. It is boiled into a bitter tea, or ground into powder. It often turns up inside mixed market remedies for pain, coughs and swelling.
Here is the honest verdict. There are no good human trials of iroko bark for any health problem. The tradition behind it is old and well recorded.
But tradition is not proof that something works. It is also not proof that something is safe.
One hazard is worth knowing up front. Iroko wood dust is a well known cause of asthma and skin rash in woodworkers. That risk comes from sawing and sanding the timber, not from a cup of bark tea.
Still, it tells you that this plant can set off strong allergy in some people.
How is iroko bark thought to work?
The short answer is that no one has shown how it works. There are no good human trials of iroko bark. So any account of how it acts in the body stays a guess.
In tradition, the bitter bark tea is used for pain, coughs and swelling. Healers also use the leaves and the milky sap. These uses tell you what people hoped for, not what the plant does.
No active part of the bark has been pinned down. No mode of action has been worked out either. If a seller tells you just how iroko bark acts on your body, treat that claim with care.
One effect of the tree is well known, though it is not a healing one. Iroko wood dust is a well known cause of asthma and skin rash in woodworkers. That points to something in the plant that the body can react to strongly.
That dust risk comes from sawing and sanding the timber. It does not come from a cup of bark tea. Even so, it is a reason to be careful with any form of this plant.
Stop taking it and see a doctor if any of these happen:
- You get a rash, hives or itching. - You feel sick or vomit after each dose. - You have bad stomach pain. - Your skin or the whites of your eyes turn yellow. - Your urine turns dark. - You bruise or bleed more than usual. - Your blood sugar runs low, with shaking and sweating.
Get emergency help at once for wheezing, a tight chest, trouble breathing, or swelling of the face, lips or tongue. These can be signs of a severe allergic reaction.
Also see a doctor, not a herb seller, for a cough lasting over three weeks, a fever over three days, a new lump, or blood in your stool.
Iroko bark is not approved as a medicine in the United States, the United Kingdom or the European Union. It is sold there as a plain herbal material, with no tested health claim allowed.
In West Africa it is sold openly in markets. The tree itself is logged heavily, and some countries limit its felling and export.
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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