Can I eat grapefruit immediately after taking medicine?

　　Autumn is when grapefruit and citrus are on the market, and many people drink grapefruit tea and orange juice during the festival. However, if you are taking certain medications, it is best to keep your distance from these fruits.

　　The active ingredients in grapefruit can inhibit the activity of liver enzymes, and many drugs need to be metabolized by liver enzymes and eventually excreted from the body. If you take this type of medicine and eat grapefruit at the same time, the medicine cannot be metabolized and accumulates in a large amount in the body, which may cause the medicine to be too effective, affect the treatment, and even cause adverse reactions.

　　Lipid-lowering drugs: If you eat grapefruit while taking lipid-lowering drugs such as atorvastatin, lovastatin, and simvastatin, the patient will be more likely to develop muscle pain, rhabdomyolysis, and in severe cases, acute renal failure.

　　Antihypertensive drugs: Since grapefruit itself also has antihypertensive effects, and it can also increase the blood concentration of antihypertensive drugs, eating grapefruit or drinking grapefruit juice while taking antihypertensive drugs such as nifedipine, nimodipine, verapamil, etc. is like overdosing on the drug, causing the blood pressure to drop sharply, which may cause dizziness, palpitation, and fatigue in mild cases, or induce angina pectoris, myocardial infarction, or stroke in severe cases.

　　Sedative and hypnotic drugs: Grapefruit will increase the possibility of diazepam (valium), midazolam and other drugs causing dizziness and drowsiness. High-altitude workers and drivers should pay special attention when taking drugs.

　　Birth control pills: Grapefruit blocks female Absorption of birth control pills. Women taking birth control pills may experience contraceptive failure if they eat grapefruit after sex.

　　Anti-allergic drugs: Grapefruit may induce adverse reactions to anti-allergic drugs such as terfenadine, causing dizziness, palpitations, arrhythmia and other symptoms.

　　Immunosuppressants: Grapefruit can increase the blood concentration of immunosuppressants such as cyclosporine and increase liver and kidney toxicity. If this kind of medicine is taken together with fruits such as grapefruit for a long time, there is a risk of inducing tumors.

　　For safety reasons, it is best to avoid eating grapefruit or drinking grapefruit juice within 3 days before taking the medicine and within 6 hours after taking the medicine. It is also best not to eat citrus and other fruits. Otherwise, you should consult your doctor before adjusting the dosage, or switch to other drugs as directed by your doctor.