What is "bergamottin"

n. (context organic compound English) A furanocoumarin found principally in grapefruit juice, but also in bergamot oil; thought to be responsible for its effect on the metabolism of some pharmaceuticals

Bergamottin is a natural furanocoumarin found principally in grapefruit juice. It is also found in the oil of bergamot orange, from which it was first isolated and from which its name is derived. To a lesser extent, bergamottin is also present in the essential oils of other citrus fruits. Along with the chemically related compound 6',7'-dihydroxybergamottin, it is believed to be responsible for the grapefruit juice effect, in which the consumption of the juice affects the metabolism of a variety of pharmaceutical drugs.