Methadone is used to help people fight heroin or other opioid addictions. Taking this in an allowable quantity as prescribed by the medical professional can be effective and safe. Methadone is extremely helpful in treating these addictions and leading a normal life. It works by blocking the crave for that post-drug-consumption euphoria. The Methadone treatment rehab centers are designed to make sure that it is consumed safely and with minimum side-effects.