Grapefruit for breakfast might just have sabotaged your medication. The green tea you’re sipping could be canceling out the effects of your cancer treatment. The St. John’s wort you take for mood support may be making your birth control ineffective. The foods and supplements we reach for to stay healthy can sometimes do exactly the opposite when mixed with prescription drugs.
Although three-quarters of Americans use dietary supplements and nearly two-thirds are on prescription drugs, millions are unknowingly combining substances that shouldn’t mix.
