| State | |||||||||
| Adolescent Primary Drug of Abuse | |||||||||
| Source: IDHW Client Information System | |||||||||
| Common Compounds | 1999-2000 | 2000-2001 | 2001-2002 | 2002-2003 | 2004-2005 | 2005-2006 | 2006-2007 | 2007-2008 | |
| Alcohol | 282 | 372 | 420 | 308 | 202 | 181 | 204 | 285 | |
| Methamphetamines | 74 | 86 | 402 | 90 | 156 | 182 | 107 | 88 | |
| Marijuana | 446 | 561 | 590 | 535 | 393 | 452 | 495 | 894 | |
| Cocaine | 10 | 8 | 5 | 9 | 10 | 11 | 10 | 15 | |
| Heroin | 3 | 6 | 0 | 1 | 1 | 1 | 3 | 3 | |
| Other Compounds | 1999-2000 | 2000-2001 | 2001-2002 | 2002-2003 | 2004-2005 | 2005-2006 | 2006-2007 | 2007-2008 | |
| Non-Rx Methadone | 0 | 0 | 0 | 0 | 1 | 3 | 2 | 0 | |
| Other Opiates/Synth | 1 | 4 | 2 | 6 | 4 | 7 | 4 | 23 | |
| PCP | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| Hallucinogens | 6 | 6 | 1 | 3 | 0 | 1 | 4 | 4 | |
| Other Amphetamines | 1 | 2 | 1 | 1 | 0 | 0 | 3 | 8 | |
| Other Inhalants | 1 | 1 | 0 | 2 | |||||
| Benzodiazpine | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 1 | |
| Other Tranquilizers | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | |
| Barbituates | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| Other Sedatives | 1 | 0 | 0 | 1 | 1 | 0 | 1 | 0 | |
| Inhalants | 4 | 3 | 6 | 6 | 2 | 5 | 2 | 4 | |
| Over-the-Counter | 1 | 0 | 0 | 0 | 0 | 0 | 3 | 6 | |
| Other | 3 | 1 | 1 | 1 | 4 | 1 | 1 | 0 | |
| None | 10 | 2 | 0 | 1 | 0 | 0 | 0 | 0 | |