Methadone is a prescription medication primarily used in the treatment of opioid use disorder and for managing severe chronic pain. It works by acting on the brain’s opioid receptors to reduce withdrawal symptoms and cravings while offering long-lasting pain relief. In the United States, methadone is a tightly regulated controlled substance that can only be obtained with a valid prescription from a licensed healthcare provider and dispensed through certified facilities or authorized pharmacies. For patients with an existing prescription, certain trusted services offer same-day local dispatch to ensure timely and secure delivery, while maintaining full compliance with federal regulations.