Methadone is a Controlled Substance: Methadone is a powerful and highly regulated opioid. It's primarily used for treating opioid addiction and managing severe pain. Selling or distributing it outside of legal medical channels is a serious crime with severe consequences.Safety Risks: Buying methadone online from unregulated sources is incredibly dangerous. You cannot verify the authenticity, dosage, or purity of the medication. Counterfeit drugs are common, and consuming them can be fatal.