*Editor's Update July 6, 2013
Since the below information was posted, further research has indicated that the number of drugs on the market that react adversely with grapefruit has increased substantially to 43! Drugs on this list include Zocor, Lipitor, Nifediac and Afeditab. Other citrus fruits that contain "furanocoumarins" such as Seville oranges, limes and pomelos.