These programs avoid withdrawal symptoms  with drugs that bind to opioid receptors  but don’t have the psychoactive effects of painkillers, heroin,  and other commonly abused opioids.
Esses programas evitam sintomas de abstinência com drogas que se unem aos receptores opioides, mas sem os efeitos psicoativos de analgésicos, heroína, e outros  opioides comumente abusivos.