Use Supartz FX (Sodium Hyaluronate (Injection)) exactly as directed on the label, or as prescribed by your doctor. Do not use in larger or smaller amounts or for longer than recommended.Sodium hyaluronate is injected directly into your knee joint. A healthcare provider will give you this injection. Sodium hyaluronate is usually given once every week for 3 to 5 weeks. Follow your doctor's dosing instructions very carefully. To prevent pain and swelling, your doctor may recommend resting your knee or applying ice for a short time after your injection. Read all patient information, medication guides, and instruction sheets provided to you. Ask your doctor or pharmacist if you have any questions. Tell your doctor if your symptoms do not improve, or if they get worse.