Grapefruit, also known as grapefruit, is the fruit of citrus plants of the Rutaceae family, is a fruit, rich in dietary fiber and a variety of vitamins and other nutrients, but does not have the efficacy and effects of drugs and side effects, but it should be noted that it can not be taken with certain drugs. Grapefruit is rich in dietary fiber and a variety of vitamins and other nutrients, per 100g grapefruit contains 1.6g dietary fiber, also contains 33.8mg of flavonoids, 31.2mg of vitamin C, 7.7mg of choline, 1419ug of lycopene, 689ug of carotene, 345ug of vitamin A, 13ug of folic acid. In addition, each 100g grapefruit also contains 135mg of potassium and a variety of minerals such as calcium, phosphorus, magnesium, selenium, zinc. Grapefruit contains furan coumarin, can inhibit the activity of the liver in the CYP3A4 enzyme, this enzyme has an important role in drug metabolism, so eating grapefruit can affect the metabolism of the liver on the drug, is taking medication, such as taking nifedipine, amlodipine, verapamil and other drugs should not be eaten by the patient grapefruit, patients who are taking drugs such as the need to consume grapefruit, please consult with your physician first.