The grapefruit is a subtropical citrus tree known for its relatively large sour to semi-sweet, somewhat bitter fruit
Drinking grapefruit juice together with certain medicines can increase blood levels of the drug to harmful levels, according to an editorial in the January issue of the journal Nature Medicine. ... Grapefruit juice inhibits a chemical in the intestine needed to break down many drugs in the body
In particular, they're a good source of vitamin A, which is important for supporting the immune system and keeping the eyes and skin healthy, folate, which is key for a baby's development during pregnancy, and vitamin C, helping to maintain healthy skin. Grapefruit also contains some magnesium, potassium and calcium