List of products in the National Drug Code with proprietary name . Meclofenamate is used to relieve pain from various conditions (such as headache, muscle aches) and to decrease pain and blood loss from menstrual periods. It is also used to reduce fever and reduces pain, swelling, and joint stiffness caused by arthritis, bursitis, and gout attacks. Meclofenamate is a nonsteroidal anti-inflammatory drug (NSAID). It works by blocking your body's production of certain natural substances that cause inflammation. This effect helps to decrease swelling, pain, or fever. If you are treating a chronic condition such as arthritis, ask your doctor about non-drug treatments and/or using other medications to treat your pain. See also Warning section.