It's no secret that some of the biggest Hollywood stars have struggled with addiction. And sadly, in some instances their vices have cut their lives short, like the esteemed actor Philip Seymour Hoffman who was found dead on Feb. 2, 2014, in his New York apartment as the result of an apparent drug overdose.
Philip had been honest about his history of drug addiction. He even confirmed to TMZ in May 2013 that he had checked into a 10-day detox facility to deal with a relapse, during which he snorted heroin. At the time, the actor said he had been sober for 23 years prior to the relapse that started in 2012. He praised "a great group of friends and family" for helping him realize that he needed help.
As Philip's loved ones and fans mourn his untimely death, click through to see more celebs -- like Angelina Jolie and Robert Downey Jr. -- who have experimented with this dangerous drug.