Mangosteen is a tropical fruit that is used for many years in the treatment of medical conditions, though currently, there is not enough evidence to determine whether it is effective or not for such conditions.
This fruit contains tannins which may be effective against diarrhea, though more evidence is needed to establish this. Mangosteen is currently used as a supplement drink or a capsule to stimulate the immune system and improve gastrointestinal and urinary infections.