MY TWENTY YEAR OLD SON HAS BEEN TAKING PRESCRIBED METHADONE EVERY MORNING FOR A YEAR AND THE CLINIC IS LOWERING TO DOSE SLOWLY TO GET HIM OFF IT COMPLETELY. HE WAS ADDICTED TO OXYCOTIN, HENCE WHY HE WENT INTO METHADONE TREATMENT. HE RECENTLY WAS PRESCRIBED XANAX FOR ANXIETY AND BUSPAR FOR ANXIETY/DEPRESSION. MY SON ALSO TAKES DEPICOTE TO CONTOL HIS EPILEPSY. HE ALSO SMOKES POT ON A REGULAR BASIS. WHAT DRUG INTERACTIONS DO I NEED TO BE CONCERNED OF, IF ANY? I NEED HELP HELPING MY SON. HE SIMPLY WILL NOT LISTEN TO ME, AND I WORRY HE` LL DIE. WE LIVE IN DES MOINES, IOWA. (MY SON STILL LIVES AT HOME) THANK YOU, TAMMY YYYY@YYYY