Olfen Gel is used for Back pain, Sprains and strains, Soft tissue sports injuries, Rheumatoid arthritis, Tendonitis, Osteoarthritis, Frozen shoulder, Dislocations and fractures, Dental and minor surgery, Bone and joint surgery, Ankylosing spondylitis, Acute gout 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.