posted by Joel Kight in Health

When grapefruits attack... sort of

November 30, 2012

I could always tell when my mother was on a diet.  She would go to the store and buy several grapefruits and every morning for a few days, breakfast was half of a grapefruit.  

My grandmother used to always eat a half of a grapefruit and a bowl of Special K for breakfast almost every day of her life. 

Little did she know then, eating that grapefruit could have been very dangerous depending on which medicines she was taking. According to a recent study from the Canadian Medical Association Journal, there is a chemical in grapefruit called furocoumarins which can inhibit the small intestines from absorbing certain medications.

This is a problem because it can cause the medication to be absorbed all at once and cause an overdose or can cause a patient not to receive the necessary minimum dose.  There are 85 medications that could pose a problem if taken with grapefruit. Among the medications are Zoloft, Allegra, Oxycodone, Erythromycin and Lipitor.  For a full list of medications, check out

It only takes one grapefruit or an 8-ounce glass of grapefruit juice to effect someone for up to 24 hours, according to

Do you eat grapefruit regularly? If so, will you stop eating them based on this recent discovery?



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