Doctors' groundbreaking research led to methadone's use in treating addiction

Doctors' groundbreaking research led to methadone's use in treating addiction: They started treating heroin addicts with methadone in 1964, finding that the drug blocked heroin's rush and instead provided a slow onset, reduced mood swings and offered the chance at a more productive life. Nyswander died in 1986; Dole died in 2006.