Aceclofenac tablets belongs to a group of medicines called non-steroidal anti-inflammatory drugs (NSAIDs) These tablets are used to relieve pain and inflammation in patients suffering from: arthritis of the joints (osteoarthritis), autoimmune disease that causes chronic inflammation of the joints (rheumatoid arthritis),  arthritis of the spine which can lead to the fusion of the vertebrae (ankylosing spondylitis).