you guys make me laugh; yes, benzos and opiates SHOULD NOT be combined, but it happens daily. so rather than tell the dude to go ask a Dr. or that you are doing the wrong thing, lets tell him what to do w/ what he has because as an addict, we all know if he has that type of done' and benzos in hand, they are all going in his mouth in a matter of time. so yea, we can say, dont do that, its bad, and then he swallows 400MG and 6MG xanny and ends up dead, or we give him a reasonable dosage since we've probably all done it ourselves, esp. me, and see where it goes from there.
if you've been taking 400MG of methadone/day then you can probably handle 240MG and .5 xanny, then I dont know what to say. maybe you are allergic to benzos or something but .5 of a benzo is not going to drop many.
one more thing - people who never really did benzos expect a certain type of "high" from them; they are used to treat anxiety or help people sleep, you do not get any type of high like you would with opiates/opiods.
when anyone first starts taking benzos and has no tolerance, or no anxiety, they will be KNOCKED THE FUCK OUT; seriously, you will just fall asleep and feel ZIP! you wake up absolutely fine. there is no "high" from a benzo. unfortunately, back in the day I would lie to my Dr. to get a script and just ate them to help sleep and eventually got hooked and would take them along w/ dope to get knocked the fuck out; create even more of a nod. a benzo is gonna knock you out regardless and then once the other drug hits you are usually out like a light w/o a tolerance.