Hello many of us after using for years don't get the full effects of our drug of choice.
What is your son taking Methadone for what drug?
Smart X Heroin addicts mix Xanax with Methadone to get the closest effect to a Heroin buss as possible. Methadone is a slow working drug but when enhanced with Xanax it kick starts it up a few notches.
How long has he been on them? Are you trying to get him to stop taking them? Is he wanting to stop taking them? These are the first issues I would want to address. How old is your son? Does he live with you? Why is he taking them? Xanax cannot be stopped abruptly if taken for a period of time. It must be tapered off of slowly. Ditto for methadone. Which i'm sure you're already are aware of. Keep posting...lots of people here can help you
Welcome to the forum.
I'm not familiar w/ this combo of drugs...but more should be along who can help you.
Good luck!
How old is your son? I took zoloft 100 miligrams,vailum 10 miligrams and 20 miligrams of methadone a day for 4 months. I don't know that he would even notice if he stopped the xanax .How long has he been on all of these? RUthie