Methadone is a regulated drug which similar to morphine or heroin is a full opioid agonist, meaning the same neural receptors in the brain are activated when a person takes methadone. But unlike heroin, methadone is used in programs to help opiate dependent people so that they don't feel they have to get involved in illicit drug use activities, won't crave illicit opiates, and won't undergo the effects of opiate withdrawal. So rather than quitting cold turkey, clinics that treat methadone clients only are authorized to administer methadone to these clients on a daily basis. This type of treatment is called methadone maintenance therapy.
Programs which treat methadone clients only are not normally set up to provide a wide range of comprehensive treatment services other than daily dosing, although some may deliver group and individual therapy and counseling. Methadone use is associated with side effects, potentials for overdose and serious drug interactions due to the fact that it is a full opioid agonist similar to heroin. For this reason, it is also a drug which is abused by opiate addicts. Seeking supplemental rehabilitation services in Lyon is highly recommended, such as counseling, therapy and cognitive behavioral therapies which are effective in long term rehabilitation and preventing relapses.