An Approach to Evaluate the Effects of Concomitant Prescribing of Opioids and Benzodiazepines on Veteran Deaths and Suicides investigates the effects of opioid initiation and tapering strategies in the presence of benzodiazepines in veterans. This report explores neurobiology and the principles of addiction and tolerance, in addition to the current use of opioids and benzodiazepines for treating pain and anxiety in both the veteran and general population. It also provides a protocol to evaluate the relationship between opioid and benzodiazepine medication practices. This framework is a critical foundation for further research to improve concomitant opioid and benzodiazepine medication practices for veterans and the general population.