If your tolerance level is 50mg oxy/day, then your breathing is more than fine on the same amount of hydro. Norcos come in 5/235s (hydro to APAP ratio), 7.5/325s, and 10/325s. I used to be prescribed 5 Norco 10/325s per day, moving up to 5 Percocet 10/325s, then 6 Roxicodone 15mg tablets per day. I never did a CWE on my pills either, and I traditionally eat 10 or more as soon as I get my scripts filled and have done so for years (because it's refill day so, yea!!!!!!). When I was on Norco and Percocet 10s, that was 3250mg APAP at once, which isn't good for your liver (especially if you have got Hep C and drink alcohol). I have always been fine, but that's doing some liver damage that may not be apparent for years, so I don't recommend being stupid like me. I'm the kind of person that, when it comes to drugs that I like and I'm really into doing, I like to play with fire. I'm merely relating my experiences and dosages, so I'm not advocating that you do the stuff I do. I guess my contribution to HR on this site is to be an example of reckless, hedonistic behavior that can lead to health issues and may even be fatal to me and others.