Cataflam is used to relieve pain and swelling (inflammation) from various mild to moderate painful conditions. It is used to treat muscle aches, backaches, dental pain, menstrual cramps, and sports injuries. It also reduces pain, swelling, and joint stiffness caused by arthritis. Reducing these symptoms helps you do more of your normal daily activities. This medication is known as a nonsteroidal anti-inflammatory drug (NSAID). CATAFLAM® (diclofenac potassium immediate-release tablets) is a benzene-acetic acid derivative. CATAFLAM is available as immediate-release tablets of 50 mg (lightbrown) for oral administration. Diclofenac potassium is a white or slightly yellowish crystalline powder and is sparingly soluble in water at 25°C. The chemical name is 2-[(2,6-dichlorophenyl)amino] benzene-acetic acid, mono-potassium salt.