Methadone is a regulated drug which similar to heroin is a full opioid agonist, which means that the same neural receptors are triggered when a person ingests methadone. But unlike heroin, methadone is regulated and used in facilities to help opiate addicted individuals so that they don't feel they have to get involved in illicit drug use activities, won't experience intense cravings, and won't feel the effects of withdrawal. So rather than quitting cold turkey, facilities that treat methadone clients only are authorized to dispense methadone to these individuals daily. This type of treatment is known as methadone maintenance therapy.
Clinics which treat methadone clients only are not typically geared to provide a broad spectrum of comprehensive treatment services beyond daily dosing, although some clinics might offer group and individual therapy and counseling. Methadone use does have side effects, potentials for overdose and drug interactions because it is a full opioid agonist similar to heroin. For this reason, it is also a drug which is abused and misused by opioid dependent individuals. Seeking supplemental rehabilitation services in Peru is highly recommended, including therapy, counseling and cognitive behavioral therapies which are successful at long term rehabilitation and relapse prevention.