It is important to evaluate for the presence of current medications that may be confounding the psychiatric presentation. Oen the individual may have tried to self-treat sleep disorders, the common cold, an annoying cough, or a host of other ailments. It is also possible that the individual may have developed an addiction to over-the-counter medications or is actively using or abusing or is dependent on common substances of abuse. A relatively recent issue for service members is the use of muscle-building and fat-burning supplements. In the deployed environment, it is not uncommon for service members to present to a mental health provider complaining of a recent development or exacerbation of anxiety, insomnia, agitation, or even paranoia aer beginning a self-prescribed supplement regimen. Table 17.1 lists common over-the-counter medications and their eects when used in excess, as well as behavioral manifestations of chronic use or overuse.