Educational information, not medical advice — ask your doctor or midwife.
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Tilo is a low, soft-leaved herb used as a bush tea across the Caribbean. Its botanical name is Justicia pectoralis. The leaves are brewed for coughs, chest colds, nerves and poor sleep.
In Trinidad and Tobago it is called garden balsam. In Jamaica it is known as carpenter bush. In Brazil the same plant is sold as chambá.
The dried leaf smells sweet, like cut hay. That smell comes from coumarin, the plant's best known compound.
Here is the honest verdict on the evidence. Human studies are few and small, and most of what is claimed rests on lab and animal work. Long use in a tradition is not proof that it works, and it is not proof that it is safe.
Short answer: no one has shown clearly how tilo works in the human body.
In animal tests, leaf extracts have calmed movement and brought on sleep. Isolated airway tissue has relaxed when extracts were added. That may fit the old use for cough and wheeze, but it is not proof in people.
In cell and animal studies the plant lowers some markers of swelling. Whether a cup of tea does the same inside you is unknown.
Coumarin is thought to add to the calming effect. That idea comes from animal work only.
One point matters for safety. Coumarin is not the same thing as warfarin, the blood thinner, even though the names look alike.
The amount of active compound in a homemade tea is small and hard to judge. Leaf strength shifts with soil, season and drying.
Tilo is most often taken as a tea. Dried or fresh leaves are steeped in hot water. At home in the Caribbean it is usually fresh leaf picked from a yard.
You may also find it sold as:
- loose dried leaf or tea bags - tinctures and liquid leaf extracts - cough syrups blended with other herbs
Capsules exist but are less common. In Brazil, a leaf syrup is made as a registered herbal medicine.
Strength is not standard across these forms. A tincture can be many times stronger than a cup of tea.
The dried leaf is sometimes smoked or added to snuff in parts of South America. Do not copy that use; burning plant material harms the lungs, and the practice has no safety data behind it.
Caribbean herbal practice treated tilo as a cooling bush tea for the chest and the nerves. Healers in Trinidad and Tobago brewed the leaf for coughs, colds and flu.
In Jamaica, where it is called carpenter bush, the crushed leaf was laid on cuts and bruises. The name points to its old use among people who worked with tools.
In Brazil and the Guianas, the plant was used for wheeze, cramps and sleep. Folk healers also mixed the dried leaf into snuff blends.
These uses were passed down by word and by household habit. They were never tested in the way a modern medicine is tested.
Stop tilo and see a doctor the same day if you notice any of these:
- yellow skin or yellow eyes - dark urine or pale stools - pain under your right ribs
Get urgent help for these signs:
- unusual bruising, nosebleeds or blood in urine or stool - a rash with swelling of the lips, tongue or throat - breathing that gets worse, or a wheeze that will not settle
Also book a routine appointment if a cough lasts more than two weeks. Long-running cough, poor sleep or anxiety needs a proper check, not a tea.
In Brazil, Justicia pectoralis is a recognised medicinal plant and a leaf syrup is registered as a herbal medicine. In the United States, United Kingdom and most of the Caribbean it is sold as an ordinary herb or supplement, with no approval to treat any disease.
Evidence grades and traditional-use labels are explained in our methodology. Nothing here is medical advice.
Reviewed by the HealisticMD editorial team How we grade evidence →
The published evidence for Tilo is weak or absent. That usually means no controlled trial has tested it, not that a trial found it ineffective — the two are different, and we grade only what has been published.
What it is typically used for, usual dose, cautions, and the study behind it where real trial data exists.
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