IT IS ANTHRANILIC ACID, SODIUM SALT, MONOHYDRATE AN ANTIINFLAMMATORY DRUG. MECLOFENAMATE SODIUM IS A NON-STEROIDAL AGENT WHICH HAS DEMONSTRATED ANTI-INFLAMMATORY, ANALGESIC, AND ANTIPYRETIC ACTIVITY. THE MODE OF ACTION, LIKE THAT OF OTHER NON-STEROIDAL ANTI-INFLAMMATORY AGENTS, IS NOT KNOWN. MECLOFENAMATE SODIUM WAS FOUND TO INHIBIT PROSTAGLANDIN SYNTHESIS AND TO COMPETE FOR BINDING AT THE PROSTAGLANDIN RECEPTOR SITE. IN VITRO, MECLOFENAMATE SODIUM WAS FOUND TO BE AN INHIBITOR OF HUMAN LEUKOCYTE 5-LIPOXYGENASE ACTIVITY. THESE PROPERTIES MAY BE RESPONSIBLE FOR THE ANTI-INFLAMMATORY ACTION OF MECLOFENAMATE SODIUM.