Taken orally once a day, methadone suppresses narcotic withdrawal for between 24 and 36 hours.
Withdrawal symptoms can make quitting fentanyl and other opiates almost impossible, especially when one attempts to do so on one's own.
Unlike other drug of abuse such as cocaine and heroin, methamphetamine is produced using common household chemicals and is a man-made drug.
Cocaine withdrawal occurs because the body compensates for the heightened euphoria by blocking pleasure centers. This causes depression and stress and other symptoms.