But the researchers added that tests on enzyme levels could determine, with reasonably accuracy, how well a patient would respond to medication accompanied by grapefruit juice. Of course, this would be best for doctors to decide, not patients hoping to cut back on their meds using guesswork.
Christopher Wanjek is the author of a new novel, "Hey, Einstein!", a comical nature-versus-nurture tale about raising clones of Albert Einstein in less-than-ideal settings. His column, Bad Medicine, appears regularly on LiveScience.
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