Diclofenac potassium powder packets are a fast-acting nonsteroidal anti-inflammatory drug (NSAID) used to relieve acute migraine attacks in adults. This medication works by reducing inflammation and blocking pain signals by inhibiting cyclooxygenase (COX) enzymes, which are involved in the production of prostaglandins. The powder formulation allows for quicker absorption compared to traditional tablets, providing faster pain relief. Diclofenac potassium is not intended for the prevention of migraines or for treating other types of pain.