Inhalants are rapidly absorbed through the lung tissue and go into the bloodstream where they are rapidly distributed to the brain and other major organs throughout the body.
The use of amphetamines is currently one of the biggest drug threats in the nation, especially the supercharged version called crystal meth.
Methamphetamine labs in the U.S. depend on supplies of the precursor chemical pseudoephedrine from sources in Canada and sometimes Mexico.
The profiles for the typical LSD user are Caucasian males and older college aged adolescents.