I'm aware that xanax works better on an empty stomach , but could certain foods interfere with the efficacy of xanax even if the meal was consumed several hours prior to dosing. I ask this because I have never taken an xanax and not fallen asleep even IF I thought I wasn't tired. But last night I could not fall asleep. I tossed and turned and finally began to slip off to sleep around 5:30am (my alarm goes off at 6:30am) only to be abruptly disturbed by my "sleep paralysis" that usually happens when I'm sleep deprived. I have had episodes like this when I have been completely out of xanax, but never while taking xanax. Needless to say, I'm exhausted this evening and looking forward to 9pm to take my dose of alprazolam. Tonight was just my own bland spicy Chicken Wings , cooked potatoes and a Salad. Last night was Chinese take-out Fried Rice , dumplings and 7 Shrimp Egg Rolls. Does anyone have any ideas?