Drugs of Abuse

Commonly Abused Drugs

Both legal and illegal drugs can be drugs of abuse. Powerful drugs can become drugs of abuse when they are misprescribed, mismanaged and illegally sold on the street. In addition, even casual use of illegal drugs can easily escalate to the level of abuse.

Drug Classes
Drugs vary in their chemical structure and their pharmacological action. The classifications below include only drug groups that are addictive. The list includes the most commonly abused prescription and illicit drugs. Each page includes specifics on the drug, addiction to the drug, withdrawal and treatment.

Drug List A-Z
Search for specific drugs by clicking on the corresponding first letter of the drug name.