Cocaine Abuse and Addiction
Cocaine is a powerfully addictive stimulant that directly affects the brain.
There are basically two chemical forms of cocaine: hydrochloride salt and freebase. The hydrochloride salt, or powdered form of cocaine, dissolves in water and, when abused, can be taken intravenously (by vein) or intranasally (in the nose). Freebase refers to a compound that has not been neutralized by an acid to make the hydrochloride salt. The freebase form of cocaine is smokable.
Information provided by the National Institutes of Health