Educational information, not medical advice — ask your doctor or midwife.
Adenanthera pavonina is a tropical tree best known for its hard, bright red seeds. Folk healers in South and Southeast Asia have used the bark, leaves and seeds. The red seeds are also strung as beads and were once used as tiny weights.
Raw seeds are not safe to eat. They contain proteins and other compounds that upset the gut. Where people eat the seeds as food, they roast or boil them first.
The honest verdict: there is almost no human trial evidence for any health claim. Nearly all findings come from test tubes and animals. Long traditional use is not proof that something works, and it is not proof that it is safe.
Nobody has shown how this plant acts in the human body. Every mechanism below comes from lab or animal work.
In test-tube studies, leaf and bark extracts slow the growth of some bacteria and fungi. Whether that happens on skin or inside the body is not established.
In rats and mice, extracts have lowered blood sugar and reduced swelling in some experiments. Animal results often fail to repeat in people. No trial has tested this in humans in a reliable way.
The seeds contain lectins, which are proteins that stick to sugars on cells. In the lab, these clump red blood cells together. This is one reason raw seeds are treated as unsafe.
The wood holds red pigments and tannins. These give the dye its colour and the bark its bitter, drying taste. Neither has a proven medical effect in people.
There is no standard commercial medicine made from this plant. What you may come across:
- Whole red seeds, sold mainly as craft beads, rosary beads or curios. - Roasted or boiled seeds eaten as a local food in parts of Asia and the Pacific.
- Dried bark or leaf, used in home decoctions in regional folk practice. - Powdered seed kernel, sold in some South Indian markets as manjadikuru. - Timber and wood chips used for red dye, not for internal use.
Seed products carry a real identity risk. Rosary pea (Abrus precatorius) seeds look similar and are far more poisonous. Buy nothing red and bead-like for internal use.
The tree has a long record in regional folk practice across India, Sri Lanka and Southeast Asia. Bark and leaf preparations were described for diarrhoea, boils, gout and joint pain.
The seeds had a second life outside medicine. Goldsmiths in India used them as small weights because their mass is fairly even. They were also strung as beads and given as keepsakes.
In Kerala, the seeds are known as manjadikuru and appear in household and temple customs. Some families kept them for babies to play with and handle.
These records describe what people did. They do not tell us whether any preparation helped, and they were not written down as self-care advice.
Get emergency care if a child swallows a seed or bead, or if anyone has repeated vomiting, bloody diarrhoea, trouble breathing, a fast heartbeat or confusion after eating seeds. Take the seed or packet with you.
See a doctor within a day if you get a rash, belly pain or dizziness after any preparation. Stop using it first.
See your doctor if diarrhoea lasts more than two days, or comes with fever or blood.
This is not an approved medicine in the US, UK, EU or Australia. The seeds are sold mainly as craft beads and curios, not as a licensed product. Sellers may not make medical claims about it.
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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