The following wrestlers have survived taking drugs of some sort.
Credit: Bob Magee, TIWR newsboard, Patty Therre, Bret Hart's source for wrestling news and info
Formerly addicted to painkillers:
Tommy Dreamer
Steve/William Regal
Fired for drug addiction:
Brian "Road Dogg" James/Armstrong
Brian "Grandmaster Sexay" Lawler"
Tammy Lynn Sytch
Currently are or have taken steroids:
Raven
Test
Rhyno
Chris Benoit
Kronic(Bryan Adams and Bryan Clark)
Goldberg
The Rock
Chyna
HHH
Scott Steiner
Eddie Guerrero
Lex Luger
Rob Van Dam
Sean O'Haire
Buff Bagwell
Brian "Grandmaster Sexay" Lawler
Known to have used drugs:
Shawn Michaels
X-Pac and Kevin Nash(rumored)
Currently have or have had alcohol problems:
Eddie Guerrero(Eddie made a return to WWF on RAW 4/1/02. Yay!)
Scott Hall(note: Hall is currently taking medication to overcome his alcohol addiction. Way to go!)