People are saying no. but if you crush xanax and put in your tea you will still feel it. It will not disolve but rather make a sort of suspension, make sure to rinse the bottom of the cup with water or more tea as some of the powder will settle at the bottom of the cup. The caffeine might counteract the drowsiness somewhat but really this sounds like a good way to have a terrible tasting cup of tea; I would suggest swallowing the xanax and chasing it with the tea for a tastier result.