Educational information, not medical advice — ask your doctor or midwife.
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Bellaco caspi is the bark and milky sap of Himatanthus sucuuba, a tall tree of the Amazon basin. Healers in Peru, Brazil and Colombia used it for pain, wounds, stomach trouble and worms. It is also called sucuuba or sucuba.
The fresh sap is a white latex, and it is an irritant. It can blister skin, hurt the eyes and burn the mouth and gut. Most products sold today use the dried bark instead.
You will find it as bark chips for tea, as a tincture, and in capsules. In Amazon markets the sap is sometimes sold in small bottles, diluted with water.
Here is the honest verdict. Almost all the research is in test tubes and rodents, not people. Long and respected traditional use is not proof that something works, and it is not proof that something is safe.
No one has shown in people how bellaco caspi works, because the human studies have not been done.
Most lab work points at two groups of plant chemicals. In cell studies, iridoids such as plumericin appear to damp down inflammation signals inside the cell. Whether that happens in a person who drinks bark tea is unknown.
In rats and mice, extracts of the bark and latex have reduced paw swelling and pain responses. Animal results often fail to repeat in humans, so treat this as a lead, not a finding.
In test tubes, extracts have slowed some parasites and some bacteria and fungi. That is a long way from treating an infection in a person.
Lupeol, a triterpene in the bark, has shown effects on swelling and on tumour cells in laboratory work. This has not been tested as a treatment in people.
Bark is the usual form sold outside the Amazon. The raw sap is the risky one.
Common forms include:
Dried bark chips or powder, simmered as a decoction (a strong tea).
Alcohol tinctures, often sold in dropper bottles.
Capsules of ground bark.
The white latex, scraped from a cut in the trunk, sold fresh in some local markets.
Topical plasters, balms and washes made from bark or diluted sap.
Bellaco caspi also turns up inside multi-herb Amazon tonics, sometimes with no clear amount on the label. If a blend does not list what is in it, you cannot judge its safety.
Bellaco caspi has a long record in Amazonian folk medicine, going back well before written herbals of the region.
Riverside and forest communities in Peru, Brazil, Bolivia and Colombia used the latex for wounds, skin sores and worms. Bark decoctions were taken for back pain, arthritis, fever and stomach complaints. The sap was also painted on hernias, swellings and lumps.
The name bellaco caspi is used in Peruvian Spanish; sucuuba is the common Brazilian name. Twentieth-century ethnobotanists recorded the plant widely, which is why it appears in modern Amazon herb catalogues.
This page describes those past uses. It does not suggest you copy them.
Stop and get medical help if you have severe stomach pain, repeated vomiting, blood in your vomit or stool, or black tarry stool.
Go to an emergency department for swelling of the lips, tongue or throat, or any trouble breathing.
Get urgent eye care if sap gets in your eye and the pain or blurring does not settle after rinsing.
See your doctor if your skin blisters, if you turn yellow in the eyes or skin, or if the problem you are treating gets worse.
In the United States and the European Union, bellaco caspi is sold as a herbal supplement, not an approved medicine. No regulator has assessed it for safety or effect. In Peru and Brazil it is sold openly in markets and herb shops.
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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