sentences:  Along with the chemically related compound 6',7'-dihydroxybergamottin, it is believed to be responsible for a number of grapefruit–drug interactions, in which the consumption of citrus containing one or both of these compounds (especially grapefruit) affects the metabolism of a variety of pharmaceutical drugs.In chemical terms, bergamottin and dihydroxybergamottin are linear furanocoumarins functionalized with side chains derived from geraniol.They are inhibitors of some isoforms of the cytochrome P450 enzyme, in particular CYP3A4.