Monovisc Injection (Sodium Hyaluronate) Prefilled Syringes 88 mg/4mLMonovisc is a viscoelastic injectable used to treat knee pain from osteoarthritis. It is made of a natural, biodegradable substance that mimics the properties of human cartilage. Monovisc is injected into the knee joint to help relieve pain and improve function. Benefits for Monovisc Osteoarthritis Knee Pain Treatment Quick and easy to administer Monovisc prefilled syringes are easy to use, requiring no mixing or preparation prior to injection.