Olfen Gel is used for Acute gout, Back pain, Sprains and strains, Rheumatoid arthritis, Osteoarthritis, Ankylosing spondylitis, Soft tissue sports injuries, Frozen shoulder, Dislocations and fractures, Tendonitis, Bone and joint surgery, Dental and minor surgery and other conditions. Olfen Gel may also be used for purposes not listed in this medication guide. Olfen Gel contains Diclofenac Sodium as an active ingredient. Olfen Gel works by reducing the substances in the body that cause inflammation and pain.