Obviously ask your doctor, but it would be more accurate to say that it interferes with most medication, with just a few that it does not.

Grapefruit knocks out key metabolizing agents in the gut that is responsible for breaking down a lot of organic molecules. For this reason, the vast majority of medications are given out in relatively large dosages in order to survive the intestines and get to the bloodstream. But if you eat grapefruit, you get that full dosage in your blood.

For some medication that doesn’t matter. Usually for prescription meds that is the exception. For most prescription meds, getting 5X the blood dose can range from debilitating to lethal.

If you take a daily pill, imagine what might happen if you swallowed a week’s worth at once. If that gives you pause, don’t mix with grapefruit.