Seth “Shifty Shellshock” Binzer Lead singer of rap rock band Crazy Town Cocaine (powder and crack)

Daniel Baldwin Actor (Departed the show in episode four) Cocaine

Mary Carey actress and former candidate for California Governor Alcohol

Jeff Conaway Actor– DEAD – Alcohol; cocaine; painkillers (Vicodin, OxyContin, Xanax, Zoloft,Ambien)

Jaimee Foxworth Former child actress Marijuana

Joanie “Chyna” Laurer Actress and former professional wrestler Alcohol

Brigitte Nielsen Actress and former model Alcohol

Ricco Rodriguez Mixed martial arts fighter and former UFC Heavyweight Champion Cocaine; marijuana; benzodiazepines (Valium) He’s a valium addict like many others in the sporting world.

Jessica Sierra Singer and former American Idol contestant Cocaine; alcohol

Steven Adler Former Guns N’ Roses drummer Valium; alcohol; heroin; cocaine

Seth Binzer Singer, returning from Season 1 after Dr. Drew learned of his relapse Stimulants (crack cocaine)

Gary Busey Actor Recovering cocaine addict, clean and sober for 13 years, though Pinsky questions his current use of medicinal marijuana for his asthma. He appears as a counselor to the other patients. (See above)

Rodney King – DEAD – Became a U.S. civil rights figure when videotaped in 1991 being beaten by L.A.P.D. officers, whose later acquittal sparked violent riots in L.A. Alcohol

Tawny Kitaen Actress and former model Painkillers (Demerol and Vicodin) and cocaine

Nikki McKibbin Singer and former American Idol contestant Cocaine, alcohol, Adderall, painkillers (Vicodin); (McKibbin was formerly addicted to ecstasy as well.)

Amber Smith Actress and model Depressants and opiates (Adderall, Dexadrine, Valium, Xanax,

Sean Stewart Son of singer Rod Stewart. Alcohol; ecstasy; Vicodin; morphine; Fentanyl; cocaine; heroin

Lisa D’Amato Model and electro rock musician Alcohol; marijuana; amphetamines; cocaine; mushroom

Heidi Fleiss Former American madam Methamphetamine; Valium; Xanax; Vicodin (Fleiss states that she is coming off a prescription forSuboxone.)

Joey Kovar – DEAD – Cast member on The Real World: Hollywood Alcohol; cocaine; ecstasy; methamphetamine; steroids

Mindy McCready – DEAD – Country music singer OxyContin; alcohol; (McCready states that she takes prescription Xanax for anxiety as needed, and that the painkillers found among her belongings during Intake were for her shoulder, which was dislocated a month prior.)

Kari Ann Peniche Miss Teen USA 2002 and subject of a Playboy pictorial Methamphetamine

Mackenzie Phillips Actress Heroin; cocaine (Formerly used marijuana.)

Dennis Rodman Former basketball player Alcohol

Tom Sizemore Actor Opiates; benzodiazepines; methamphetamine; marijuana; heroin; Klonopin (formerly used cocaine from 1991-1996)

Mike Starr – DEAD – Former Alice in Chains bass player Heroin; methadone; methamphetamine; cocaine; marijuana.

Jason Davis Actor, socialite Heroin; OxyContin; Xanax

Janice Dickinson Model, fashion photographer, actress, author and agent. Alcohol; cocaine (Dickinson says she formerly took Ativan, and that she takes one prescription Ambien a night to sleep.)
Leif Garrett Actor, singer, and TV commentator Cocaine; heroin

Jeremy London Actor, best known for his regular roles on Party of Five, 7th Heaven, and I’ll Fly Away. Marijuana; painkillers

Francine “Frankie” Lons Star of the BET reality show Frankie & Neffe, and mother of singer Keyshia Cole. Alcohol; crack cocaine

Eric Roberts Actor, known for his Oscar-nominated performance in Runaway Train and TV shows such as Less Than Perfect and Heroes. Marijuana (Formerly used cocaine and a variety of psychotropicdrugs such as Prozac.)

Rachel Uchitel Nightclub manager, correspondent for Extra, and one of Tiger Woods’mistresses. Alcohol; Opiates including Vicodin; benzodiazepines includingValium, Klonopin, and Xanax

Jason Wahler Reality television personality known as a second season cast member on Laguna Beach: The Real Orange County Alcohol

Steven Adler Former Guns N’ Roses drummer, returning from season 2 Marijuana

Amy Fisher “Long Island Lolita” who shot her then-loverJoey Buttafuoco’s wife, Mary Jo, in the face. Alcohol

Dwight Gooden Former Major League Baseball pitcher. Cocaine; alcohol; Ambien

Jeremy Jackson Actor, best known for his role on Baywatch as Hobie Buchannon. Steroids

Jessica Kiper Actress and television personality, best known for appearing twice as a contestant on Survivor. Alcohol; marijuana; cocaine (former user); opiates, particularly Vicodin; benzodiazepinesincluding Valium and Xanax

Bai Ling Actress. Alcohol

Michael Lohan Father of actress Lindsay Lohan. Alcohol (formerly used cocaine, but quit six years prior)

Sean Young Actress. Alcohol