Educational information, not medical advice — ask your doctor or midwife.
Jobo is the fruit, leaf and bark of Spondias mombin, a tall tropical tree. English speakers call it hog plum; in parts of West Africa it is ubos or iyeye. The small yellow fruit is an ordinary food, while the leaves and bark are brewed into teas and skin washes.
In Latin American home practice, leaf tea was taken for diarrhoea, fever and sore throats. Leaf washes were put on wounds and sores. Long use in a tradition is not proof that something works, and it is not proof that it is safe.
Here is the honest verdict on the evidence. Good human trials are almost absent for every medicinal claim made for jobo. Nearly all findings come from test tubes and animals, so the fruit is best seen as food and the leaf and bark preparations as unproven.
Nobody has shown how jobo works in people. Everything below comes from laboratory dishes or animal studies.
In test tubes, leaf extracts slow the growth of several bacteria and fungi. Tannins in the leaf may explain part of that. Whether the same thing happens in your gut or on your skin is not known.
In cell studies, leaf extracts slowed herpes viruses. This has never been tested in people, so it cannot be called an antiviral treatment.
In rats, leaf extracts lowered blood sugar and sped up wound closure. Rat results often fail to carry over to humans. They are a reason to study a plant, not a reason to trust it.
Strips of animal womb tissue contracted when leaf extract was added. This is one clear reason to keep jobo leaf and bark away from pregnancy.
Fresh fruit is the most common form. People eat it raw or make it into juice, jam, vinegar and cold drinks.
Dried leaves are sold loose for tea in Latin American and West African markets. Pieces of bark are sold the same way.
Leaf washes and crushed-leaf poultices were put on skin in folk use. Tinctures and capsules turn up in some online shops.
None of these forms has a standard strength. Labels rarely tell you how much plant material you are actually getting.
Jobo was a village tree as much as a medicine. Families ate the fruit and reached for the leaves for everyday complaints.
Healers in Mexico, Central America, the Caribbean and the Amazon brewed leaf tea for diarrhoea and fever. Leaf washes were used on wounds, sores and sore eyes.
The same species grows in West Africa, where it is called ubos or iyeye. Midwives there used leaf preparations around childbirth. That use is dangerous and is not repeated here as advice.
The tree was also planted as a living fence and the fallen fruit fed pigs, which is how the name hog plum arose.
Stop using jobo and see a doctor if any of these happen.
Diarrhoea lasting more than two days, or any blood in the stool. Signs of dehydration such as dark urine, dizziness or passing very little water.
A rash, swollen lips or trouble breathing after contact with the plant: this needs urgent care. Shaking, sweating or confusion, which can mean low blood sugar.
A wound that turns red, hot or swollen, or a fever above 38.5C that does not settle.
In the United States and the European Union the fruit is an ordinary food. Leaf and bark products are sold as herbal teas or supplements, not as approved medicines, and no agency has reviewed them for treating any illness.
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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