Addiction is the compulsive, drug-seeking behavior, representing a loss of control that leads a person to continually acquire and use the drug/substance, despite serious medical and/or social consequences. 1 In 2009, the National Survey on Drug Use and Health reported an estimated 20.8 million adults were classified with substance use disorders, defined as dependence on or abuse of an illicit drug or alcohol. 2 Among those adults with substance use disorders, 42.8% (8.9 million adults) had a co-occurring mental illness. 2 The use of illicit drugs was more likely in adults with any mental illness compared to