Narcotics Anonymous (NA), founded in 1953, describes itself as a "nonprofit fellowship or society of men and women for whom drugs had become a major problem." Narcotics Anonymous uses a 12-step model developed for people with varied substance use disorders and is the second-largest 12-step organization, after 12-step pioneer Alcoholics Anonymous.
As of May 2018 there were more than 70,000 NA meetings in 144 countries.
