Overview Safety Trial of Naproxen Sodium/ Diphenhydramine Status: Completed Trial end date: 2011-07-01 Target enrollment: Participant gender: Summary The purpose of this trial is to see how safe the combination of naproxen sodium 440 mg and diphenhydramine hydrochloride (DPH) 50 mg (the investigational product) is compared to placebo (capsules containing no drug) when taken for 10 days. Phase: Phase 3 Details Lead Sponsor: BayerTreatments: DiphenhydramineNaproxenPromethazine