After the first dose, the Back to the Future star became addicted to cocaine.

Christopher Lloyd's new memoir, "In My Own Time: A Memoir," reveals his struggles with addiction, starting with his first cocaine use in the 1970s. He describes becoming instantly addicted and how substance abuse escalated, although he never performed under the influence. Lloyd recounts a violent incident in 1983 after his show "Taxi" was canceled, leading to severe injuries. After multiple setbacks, he entered rehab in 1993, recognizing the damage drugs and alcohol caused in his life. Eventually, he achieved sobriety after several relapses.