High Quality Content by WIKIPEDIA articles! Crystal Meth Anonymous (CMA) is a California Non-Profit, Public Benefit Corporation working as a twelve-step fellowship of recovered and recovering crystal meth addicts. Participants in local groups of varying sizes meet in order to help others recover from methamphetamine addiction. CMA advocates complete abstinence from methamphetamine, alcohol, inhalants, and all other psychoactive drugs not taken as prescribed.