Educational information, not medical advice — ask your doctor or midwife.
Gumbo limbo is a tropical tree of the Caribbean, Central America and south Florida. Its red bark peels in thin papery sheets. Caribbean folk medicine used the bark as a tea and as a skin wash.
The tree has many local names. It is turpentine tree in the Bahamas and Jamaica, gommier rouge in Haiti and Dominica, and almácigo in Cuba. The names come from the sharp, piney smell of the resin.
Today you may find dried bark, bark tea, tinctures or capsules sold as a herbal product. It is not an approved medicine anywhere.
Here is the honest verdict. Human evidence is very thin, and almost all testing has been in labs or animals. Long traditional use is not proof that it works, and it is not proof that it is safe.
No one has shown how gumbo limbo works in people. The ideas below come from lab and animal work only.
In test tubes, bark extracts slow the growth of some bacteria and fungi. Whether that happens on human skin is not established.
In animal studies, extracts have reduced swelling and pain signals. Animal results often fail to repeat in people.
In cell studies, some compounds in the bark act on tumour cells. That is a long way from any effect in a person, and it says nothing about treating cancer.
Tradition held that the bark calms the rash from poisonwood, a tree that often grows nearby. That claim has not been tested in a proper trial. The bark is rich in tannins, which are astringent and can feel drying on skin, and that may explain the soothing feel people report.
Dried bark is the usual form. It is simmered in water to make a tea or wash.
Other forms you may meet:
Tinctures and liquid extracts made with alcohol.
Powdered bark in capsules, mostly sold online.
Raw resin or gum from the trunk, applied to skin in tradition.
Leaf tea, used on some islands.
Products are rarely standardised. Two bottles can differ a lot in strength.
Look for a label that names the plant as Bursera simaruba. Wild-gathered bark carries a real risk of picking the wrong tree.
Caribbean healers used gumbo limbo for centuries, and written records of that use go back to the colonial era. Indigenous Taíno practice and later African-Caribbean and creole folk medicine all drew on the tree.
Bark decoctions were taken for fevers, colds and body aches. Washes and poultices were put on rashes, sunburn, insect bites and sores.
The best known claim was that gumbo limbo eased the rash from poisonwood. The two trees often grow side by side, and the pairing became local lore.
The resin was burned as incense and used as a glue and varnish. None of this history tells you that self-treatment today is wise or safe.
When to see a doctor: stop using it and get medical advice if any of these happen.
See a doctor the same day if a rash spreads, blisters, weeps or covers a large area.
See a doctor if a fever goes above 39°C (102°F), or lasts more than three days.
See a doctor if diarrhoea lasts more than two days, or has blood in it.
Get emergency help now for swelling of the face, lips or tongue, a tight throat, or trouble breathing.
Get urgent care for yellow skin or eyes, dark urine, or pain in the upper right belly.
In the United States it is sold as a dietary supplement or a botanical raw material. The FDA has not reviewed it for safety or for any health claim.
In the UK and the EU it is not an approved herbal medicine. It is not licensed as a drug in any country we know of.
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.
One email with the summary. We'll also send a short weekly evidence update — unsubscribe any time.
