Diclofenac Potassium is a fast-acting, nonsteroidal anti-inflammatory drug (NSAID) used to treat pain, inflammation, and swelling caused by conditions such as arthritis, musculoskeletal injuries, and post-operative pain. It works by inhibiting the enzyme cyclooxygenase (COX), which is involved in the production of prostaglandins that cause pain and inflammation. Diclofenac Potassium is a more soluble form of diclofenac, providing rapid onset of action compared to its sodium counterpart, and is often used for acute pain management.