My wife was prescribed alprazolam about 2 weeks ago. They were for anxiety relief. The Dr. prescribed 1 mg twice a day but she takes them only once per day at night. It does help her sleep all night but when she wakes up she is wired like she is on "speed". She talks non-stop and is easily irritated with a short temper. She can work 18-20 hours straight and says she's not tired. All that I've read about Xanax is that it make a person drowsy, which is the exact opposite of her reaction. Is this a common reaction to the medication? It did relieve her anxiety though.