The uses of FLEXIDOL include: Indicated for the relief of pain and inflammation in osteoarthritis, rheumatoid arthritis and ankylosing spondylitis. Aceclofenac belongs to a group of medicines called non-steroidal anti-inflammatory drugs (NSAIDs). It works by blocking the action of a substance in the body called cyclo-oxygenase. Cyclo-oxygenase is involved in the production of various chemicals in the body, some of which are known as prostaglandins. Prostaglandins are produced in response to injury or certain diseases and would otherwise go on to cause pain, swelling and inflammation. Arthritic conditions are one example of this. Aceclofenac is used to relieve pain and inflammation in arthritic conditions. All the medicines in this group reduce inflammation caused by the body's own immune system and are effective pain killers.