Most of us here are fairly bull-headed and are going to take what we set our mind to. While I agree taking pain meds (narcotics) can help in recovery, it's that reason I say STAY THE FUCK AWAY!
Trust me. I have been there/done that, and it doesn't end well. While you're taking them everything is great. No pain, no worries, and the big one for us, it makes you feel young!
The problem lies in the fact that oxycontin, oxycodone (percocet included here), and hydrocodone (vicodin) are very sneaky. You start taking them for legitimate purposes, but the next thing you know you're taking it because "I had a hard workout today". Sooner than later it becomes a reward for your hard workout, or your hard day at work, or your old lady pissed you off. Next thing you know....uh oh!
That's only the mental part. There's not enough room for me to start talking about the physiological effects of those drugs on your body. Bad stuff bros. If you are going through the effort of training, diet, and cycling, taking narcotic pain pills is counterproductive. It slows your metabolism big time. Primarily by constipating you and keeping unnecessary "waste" in your colon. Stick to Advil or Tylenol.