Voltaren SR 75 mg is a slow-release, nonsteroidal anti-inflammatory drug (NSAID) that contains diclofenac sodium as its active ingredient. It is formulated to provide long-lasting relief from pain and inflammation associated with conditions like arthritis, musculoskeletal disorders, and injuries. The sustained-release formulation ensures a gradual release of the medication, prolonging its effect and reducing the need for frequent dosing.