Diclofenac sodium is classified under which category?

Diclofenac sodium is primarily classified as a topical nonsteroidal anti-inflammatory drug (NSAID) when formulated for external application, such as in gel or solution form. Its topical formulation is used for the treatment of localized pain and inflammation, particularly in conditions like osteoarthritis. The benefit of using a topical NSAID like diclofenac is that it minimizes systemic absorption, potentially reducing the risk of systemic side effects while effectively managing localized pain.

In addition to its topical formulation, diclofenac is also available in oral forms, which can classify it as a systemic NSAID when taken this way. However, the question specifically asks for the classification that aligns with its topical use. Therefore, emphasizing its categorization as a topical NSAID highlights its application and rationale in treating musculoskeletal conditions directly at the site of pain, providing effective localized relief.

Understanding this classification is important in pharmacology, as it influences prescribing practices and patient management strategies.