Ask Well: Can Grapefruit Juice Affect My Thyroid Medicine?
Q. Does grapefruit juice affect levothyroxine effectiveness? A. There are about 100 drugs that can have dangerous and even life-threatening effects if you eat grapefruit or drink grapefruit juice while taking them, but levothyroxine, a thyroid hormone drug used to treat an underactive thyroid, is not one of them. Grapefruit juice may, however, slightly reduce…