Neonatal abstinence syndrome (NAS) is a serious condition affecting newborns that typically occurs as a result of opioid withdrawal following prenatal opioid exposure. It generally manifests as a range of symptoms impacting the autonomic nervous system, gastrointestinal tract, and central nervous system. If left untreated or treated inappropriately, NAS can result in severe complications, including death. Here, we present a case involving a newborn with NAS born to a mother undergoing methadone maintenance treatment (MMT) for prior heroin use. The diagnosis and treatment of NAS among babies, as well as dilemmas associated with the promotion of MMT by governmental authorities, are also discussed.