Ponstan 500mg is a nonsteroidal anti-inflammatory drug (NSAID) used to treat pain, including acute pain, menstrual pain, and inflammation due to various conditions such as arthritis, bursitis, and gout. This medication helps reduce pain, swelling, and joint stiffness caused by these conditions. It contains the active ingredient Mefenamic acid which belongs to a class of medications called NSAIDs. This medication comes in tablet form and should be taken by mouth with food. Each tablet contains 500mg of Mefenamic acid.