DUDE ya don't even wanna mess wit OC's. 1 40mg Oxy. = 8 Percocets w/o the tylenol = about 10 Vicoden ES. Percocet is 5mg of Oxycodone, so even a 20mg Oxy. is = 4 Perco.= 5 or so Vic.'s. You definitely don't wanna mess wit the newest thig prescribed for pain, METHADONE. Trust Me Bro. .