it's one of my favorite combos, usually take 1mg of xanax with 15-30mg of hydro and it feels greaaaaaaaaat. one thing i've noticed personally tho, is the xanax will dull the opiate if you take it a) a half hour or less BEFORE or a half hour or less AFTER. if you take them both at the same time you're usually pretty good. i've never had any problems with this, in fact i think its waaaaaaaay safer than a few beers and 10mg of vicodin. alchie and opiates always led to a lot of respiratory depression and puking, mixing benzos and opiates has never had that result.