It is dangerous to eat grapefruits or drink grapefruit juice when taking some medications. The list of medicines that should not be taken with grapefruit products is very long. Recent research shows evidence that grapefruit and grapefruit juice can react adversely with over 85 prescription medications.
As little as one grapefruit or one 8-ounce glass of grapefruit juice can cause an effect that may last more than 24 hours. Life-threatening side effects range from abnormal heart rhythms, stomach bleeding, and kidney damage to death.
Most cholesterol medicines should not be mixed with grapefruit juice. The two should not be mixed even if taken at different times during the day.
Check this list to see if a drug you are taking that should not be mixed with grapefruit or grapefruit juice
You may want to avoid grapefruit while you are on medication. While you shouldn't eat grapefruit or drink grapefruit, you may eat other citrus fruits except Seville oranges, limes, and pomelos. Sweet orange varieties do not produce this interaction.
Call you health care provider if you notice a reaction after you eat grapefruit and take your medicines.
When your physician prescribes a new medicine, make sure to ask if you should avoid eating grapefruit or drinking grapefruit juice while on the medication.