CLICK HERE TO ORDER NOW: Use the coupon code “SALE10” to receive up to 30% off of every purchase. Methadone is a drug that is mainly used to treat opioid addiction, especially in patients who are undergoing maintenance therapy or opioid withdrawal. It operates by binding to the same brain receptors that opioids like heroin or morphine target because it is an opioid agonist, a class of medication. Methadone, on the other hand, acts more gradually and remains in the body longer, so it helps with craving reduction and withdrawal symptoms without giving users the euphoric high that is sometimes associated with other opioids.