Diarrhea

Traditionally used, especially the fruit, for long-lasting diarrhea and dysentery. A fruit pulp extract reduced diarrhea in rats with colitis; it hasn't been tested in people.

A review of 38 trials found it improved cure rates and shortened diarrhea; evidence quality was low.

A traditional EU herbal medicine for mild diarrhea (as a tea of the dried berries). See a doctor if it lasts more than 3 days.

Used by 19th-century doctors for long-lasting diarrhea. Not tested in modern studies.

Traditional use in many countries. In one 5-day trial in 109 adults, people taking a guava leaf decoction recovered from sudden diarrhea faster than a comparison group given oral rehydration solution. Everyone knew which treatment they got.

Used in Ayurveda and folk medicine for diarrhea and dysentery. Not tested in trials.

Used with coptis for "damp-heat" diarrhoea and dysentery; reduced diarrhoea in mice. Not tested in trials.

Traditionally used for diarrhea in Shaanxi, China. A leafy-stem extract reduced diarrhea in mice; it hasn't been tested in people.

Traditionally used for diarrhoea; reduced diarrhoea in rats. Not tested in people.

Traditionally used for dysentery (bloody diarrhea). This use hasn't been tested in people.

Traditionally used for diarrhoea and dysentery. Not tested on its own in trials.

Traditionally used for dysentery (bloody diarrhea).

Traditionally used for diarrhea; not studied in people. It contains a compound toxic to nerve cells.