Helium.com | Substance Abuse | Substance abuse: Crack cocaine http://www.helium.com/knowledge/45309-substance-abuse-crack-cocaine.xml Helium.com > Substance Abuse > Substance abuse: Crack cocaine en-us Copyright Helium.com Mon, 05 May 2008 19:39:55 GMT Mon, 05 May 2008 19:39:55 GMT Cocaine causes the sudden release in the brain of a neutrotransmitter called dopamine. Normally, this compound is released when a basic need, such... http://www.helium.com/items/1670790-crack-cocaine Thu, 10 Dec 2009 10:29:31