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Injectable solution Oral tablet, extended release Brand Names Aflaxen , Aleve , Aleve Back and Muscle Pain , All Day Pain Relief, All Day Relief, Anaprox-DS , Comfort Pac with Naproxen, EC-Naprosyn , Flanax Pain Reliever, Midol Extended Relief, Naprelan, Naprosyn, Naproxen Sodium DS, Pamprin All Day Relief...