Diclogesic (Diclofenac Sodium 12.5mg) is a medication that belongs to the class of nonsteroidal anti-inflammatory drugs (NSAIDs). It is primarily used to relieve pain and inflammation caused by various conditions, such as arthritis, muscle pain, post-surgical pain, and other inflammatory disorders. The active ingredient, Diclofenac Sodium, works by inhibiting the action of cyclooxygenase (COX) enzymes, which are involved in producing prostaglandins — compounds that cause pain and inflammation in the body.