Nopain D.S. is a double strength pain relief medication containing 500mg naproxen sodium per tablet. This film-coated tablet formulation is designed to reduce pain, swelling and provide anti-inflammatory effects. Each box contains 10 film-coated tablets. This is a prescription medication containing naproxen sodium 500mg as the active ingredient. The film-coated tablets provide double strength pain relief compared to regular strength formulations. As this is a medication, it should only be taken under the direction of a healthcare provider. The tablets are intended to help manage pain, reduce swelling and provide anti-inflammatory effects.