The Department of Defense (DOD) and the Department of Veterans Affairs’ (VA) Veterans Health Administration (VHA) have collaborated to develop clinical practice guidelines for post-traumatic stress disorder (PTSD) and mild traumatic brain injury (TBI). Medication continuation, when clinically appropriate, is critical for transitioning servicemembers with PTSD or TBI who have been prescribed psychiatric, pain, or sleep medications. Adverse health effects may occur if these medications are inappropriately discontinued. This book examines the extent to which DOD and VHA developed and monitored recommended medication practices for PTSD and TBI; the extent to which psychiatric, pain, and sleep medications on DOD’s formulary are on VA’s formulary, and how differences might affect medication continuation; and key efforts VHA has to help ensure medication continuation, and the extent it is monitoring these efforts.