The increasing abuse of the street drug crystal meth (methamphetamine) in many countries worldwide has resulted in a growing demand to treat patients who have acquired a methamphetamine-related disorder. The results of a systematic literature search which led to the consensus-based recommendations by the Working Group of the German Agency for Quality in Medicine (Ärztliches Zentrum für Qualität in der Medizin - ÄZQ) are presented. Pharmacological treatments were reviewed in 58 out of the 103 publications included. They were mainly randomized controlled trials (RCT). Despite increased research activities, none of the medications studied demonstrated a convincing and consistent effect on abstinence rates, despite some having an impact on craving and retention rates or symptom control. In addition, as yet there is no sufficient evidence available for dopamine analogue treatment ("substitution") after the initial withdrawal-period. Methamphetamine-related, post-acute persistent or comorbid syndromes such as methamphetamine-associated psychosis (MAP), depressive syndromes, anxiety, and sleep disorders are usually treated in a symptom-oriented manner. Risks of interactions with methamphetamine have to be taken in account when prescribing medications with doubtful efficacy. Further research is warranted.
