IP 190 500 Pill - white oval, 16mm Pill with imprint IP 190 500 is White, Oval and has been identified as Naproxen 500 mg. It is supplied by Akyma Pharmaceuticals.Naproxen is used in the treatment of Back Pain; Ankylosing Spondylitis; Bursitis; Muscle Pain; Chronic Myofascial Pain and ...