Crack is a form of cocaine derived from powdered cocaine. Because crack is smoked, the high is experienced by the user in less than 10 seconds. This reason, along with being inexpensive, are the reasons why crack became very popular in the mid 1980's. Crack is very dangerous because it is highly addictive and very difficult to give up. The drug gives a high for about 5-7 minutes and then the user crashes feeling depressed.

Some effects to using crack include constricted blood vessels, increased temperature, heart rate, blood pressure, restlessness, irritability, anxiety, and with long term use, violence and paranoia. Once the drug wears off the user wants to have more right away to get that feeling again.

There are many ways a person can tell if another person is using crack. Some ways include definite changes in personality or behavior, loss of concentration, weight loss, agitation, altered sleep patterns, loss of interest in appearance, restlessness and anxiety.

Crack (1999, August 8). Retrieved January 4, 2009, from
Crack (2002, February 22). Retrieved January 4, 2009, from