Cocaine's effects: Highs and harms

Photos: Celebrities who died from painkillers, cocaine and heroin
Comedian and actor John Belushi, known for his early work on "Saturday Night Live," died in 1982 after a "speedball," a combination of heroin and cocaine injected together via the same syringe. He was 33 years old.
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Photos: Celebrities who died from painkillers, cocaine and heroin
Australian actor Heath Ledger, star of "A Knight's Tale," "Brokeback Mountain" and the Batman sequel "The Dark Knight," died in 2008 of a prescription drug overdose. He was 28. Opiates such as oxycodone (OxyContin) and hydrocodone (Vicodin) were found in his system, along with alprazolam (Xanax), diazepam (Valium) and two insomnia drugs.
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