If you take a. 25 mg of Xanax (alprazolam) at 7:00 a.M., how many hours do you need to wait before drinking alcohol?

Don't. You may want to get an assessment by a therapist specializing in addictions or an addiction medicine md. Why are you taking xanax (alprazolam) at 7 am? And why, at that early hour, would you be thinking of how long you need to wait to have a drink? Perhaps I am not understanding the whole picture, but this sounds like there may be a problem.