Methamphetamine is highly addictive, and particularly when it is injected or smoked. Withdrawal is usually intense and relapse is common. Doctors sometimes prescribe less volatile forms of amphetamine to break the addiction cycle. | Methamphetamine is highly addictive, and particularly when it is injected or smoked. Withdrawal is usually intense and relapse is common. Doctors sometimes prescribe less volatile forms of amphetamine to break the addiction cycle. |