“…4 However, despite clinical guidelines, evidence from practice suggests that gastroprotective co-therapy strategies are underutilized by physicians 7 and poorly adhered to by patients. [8][9][10][11] Partly as a result of this, there has been growing interest in the use of fixed-dose combination therapies of NSAIDs with gastroprotective agents in a single tablet to, among other potential benefits, improve patient adherence. PN 400 (VIMOVO; AstraZeneca, Wilmington, DE, USA and POZEN, Inc., Chapel Hill, NC, USA) is a fixed-dose combination of EC naproxen 500 mg and immediate-release (IR) esomeprazole 20 mg that is in development for the treatment of the signs and symptoms of osteoarthritis, rheumatoid arthritis and ankylosing spondylitis in patients at risk for developing NSAIDassociated gastric ulcers.…”