Behavioral Indicators

Many methamphetamine users abuse the drug in pursuit of appetite suppression and/or increased physical activity effects, which can last for hours and sometimes days. The user may experience prolonged periods of insomnia and increased activity, which can be desirable to an overworked mother or student preparing for examinations. However, undesired effects include sudden mood swings, bizarre behavior, tremors, slurred/rapid speech and repetitive motor activity.³² Methamphetamine users frequently abuse other illegal drugs as well as tobacco and alcohol. Many meth users are in prison following exhibition of uncontrolled violent and aggressive behavior.⁴⁰