The 36-year-old film star, who was a former heroin addict, said addiction should be treated as a health issue rather than a criminal matter, reported Daily Mirror.
"Addiction should be treated as an illness and society should recognise that addicts, with the proper help, can become active and useful members.
"Society should not 'discard people, write them off on methadone and leave them on the sidelines'. Instead, society should neutralise the toxic social threat they pose as criminals," he said.