ACECLOFEN is the glycolic acid ester of diclofenac. It is an orally administered phenylacetic acid derivative with analgesic and anti-inflammatory properties. As a cytokine inhibitor, ACECLOFEN exhibits a higher anti-inflammatory action than conventional non-steroidal anti-inflammatory drugs (NSAIDs). ACECLOFEN works by blocking the action of cyclo-oxygenase. Cyclo-oxygenase is involved in the production of prostaglandins which cause pain, swelling and inflammation.