swim receved a new script for xanax and picked it up at the prescription at a local pharmacy. what suprised I was the patient education paper that usually comes along with prescriptions. I was particularly interested in the part on how to use the medicine. Swim will quote the paper: Eating grapefruit or drinking grapefruit juice while you are taking this medicine may increase the amount of this medicine in your blood, which may increase your risk for serious side effects. I was wondering what this was all about? how does grapefruit juice increase the amount of xanax in your blood? could anybody clarify what this is about?