Dr. David Ohlms answers questions that are frequently asked about methamphetamine, known by the street terms of speed, crystal, crank, ice, and meth. It can produce a more intense reaction than cocaine, lasting anywhere from 8 to 24 hours. Dr. Ohlms addresses the powerful addictive nature of the drug, explaining how it stimulates the central nervous system, giving the user a rush, before crashing them into a violence-prone depression as the effect of the drug wears off. Midwestern states now lead the nation in the illegal production of meth, indicating the growth of the problem. This is a good video for law enforcement. Running Length – 20 min.