GenVisc 850 is administered by a healthcare professional directly into your knee joint. It is not something you inject yourself.

• Professional Administration: The injection will be given by a doctor or another trained healthcare provider in a medical setting.
• Preparation: Before the injection, the skin around your knee will be thoroughly cleaned with an appropriate disinfectant (not one containing quaternary ammonium salts). Sometimes, the doctor might apply a local anesthetic (numbing medicine) to the skin to make the injection more comfortable. If there is excess fluid in your knee joint (called an effusion), the doctor may remove some of it before injecting GenVisc 850.
• Injection Process: The doctor will carefully inject the prescribed amount of GenVisc 850 directly into the joint space of your knee.
• Post-Injection Care: After the injection, you might be advised to avoid strenuous activities or prolonged weight-bearing (like jogging, tennis, heavy lifting, or standing for more than an hour) for about 48 hours to minimize pain or swelling at the injection site. Light walking is usually fine.
• Series of Injections: GenVisc 850 is typically given as a series of 5 injections, one injection per week for 5 consecutive weeks. It’s important to complete the entire series as prescribed for the best results, even if you start to feel better after earlier injections.

GenVisc 850 works by replacing or supplementing a key component of your knee joint’s natural fluid.

• Mimicking Natural Joint Fluid: The active ingredient in GenVisc 850 is sodium hyaluronate, which is a form of hyaluronic acid. Hyaluronic acid is a major component of the synovial fluid found in healthy joints. This fluid acts like a lubricant and shock absorber, allowing your knee bones to glide smoothly over each other and protecting the joint from impact during movement.
• Restoring Viscosity: In osteoarthritis, the natural hyaluronic acid in the knee breaks down, making the synovial fluid thinner and less effective. When GenVisc 850 is injected into the knee, it adds a thicker, more viscous form of hyaluronic acid back into the joint.
• Lubrication and Cushioning: This added hyaluronic acid helps to restore the lubricating properties of the joint fluid, reducing friction between the worn cartilage surfaces. It also improves the fluid’s ability to absorb shock, providing a cushioning effect during movement and weight-bearing activities.
• Reducing Pain and Improving Function: By improving lubrication and cushioning, GenVisc 850 is thought to reduce pain and stiffness, allowing for better movement and function of the knee joint. Some research also suggests that hyaluronic acid might have anti-inflammatory effects and potentially help protect the remaining cartilage.

Like any medical procedure involving injections, GenVisc 850 can cause side effects. Most are temporary and localized to the injection site.

• Common Side Effects (at the injection site):
  • Pain: Temporary knee pain at the injection site.
  • Swelling: Swelling or puffiness around the knee.
  • Redness/Warmth: Redness or a feeling of warmth.
  • Bruising: Minor bruising.
  • Stiffness: Temporary stiffness in the knee.
• Less Common (but more serious) Side Effects:
  • Allergic Reaction: While rare, a serious allergic reaction is possible, with symptoms like hives, difficulty breathing, or swelling of the face, lips, tongue, or throat. Seek emergency medical help immediately if this occurs.
  • Severe Pain/Swelling: If you experience severe or persistent pain or swelling around the knee that does not go away after a few days, contact your doctor.
  • Joint Infection: As with any injection into a joint, there’s a very rare risk of infection inside the joint (septic arthritis). Symptoms might include severe pain, significant swelling, warmth, and fever. This is a medical emergency.
  • “Injection Flare”: A less common reaction (about 1% of patients) is a temporary increase in joint inflammation, pain, and fluid accumulation in the knee, sometimes called an “injection flare.” Your doctor can drain the fluid to relieve this.

Other general side effects (rarely linked to GenVisc 850 due to low systemic absorption): Nausea, stomach pain, headache, dizziness, back pain, muscle pain, numbness or tingling.

Before receiving GenVisc 850, your doctor will assess your medical history and specific situation.

• Allergies: You should not receive GenVisc 850 if you have a known allergy or hypersensitivity to sodium hyaluronate preparations or to bacterial proteins.
• Infections: GenVisc 850 should not be injected into knees that have an active infection, or into areas where the skin around the knee has an infection or skin disease. This is to reduce the risk of introducing bacteria into the joint.
• Fluid in the Knee: If there is a large amount of excess fluid (effusion) in your knee joint, your doctor will usually remove this fluid before injecting GenVisc 850.
• Blood Clots/Circulation Problems: Inform your doctor if you have blood clots or circulation problems in your legs.
• Pregnancy and Breastfeeding: It is not known if GenVisc 850 will harm an unborn baby. Tell your doctor if you are pregnant or planning to become pregnant. It is also unknown if GenVisc 850 passes into breast milk. Discuss the potential risks and benefits with your doctor if you are breastfeeding.
• Joint Overuse: Avoid strenuous activities or prolonged weight-bearing activities for at least 48 hours after the injection to minimize temporary pain or swelling.
• Other Medical Conditions: Discuss any other medical problems you have with your doctor, as these may affect the use of this medicine.
• Age Restriction: GenVisc 850 is not approved for use in individuals younger than 21 years old.

Since GenVisc 850 is injected directly into the knee joint and has very limited absorption into the rest of the body, significant interactions with other medicines taken by mouth are rare.

• Disinfectants: A very important interaction to be aware of is with certain disinfectants. Do not use disinfectants containing quaternary ammonium salts (e.g., benzalkonium chloride) for skin preparation before the injection. These can cause the hyaluronic acid to clump together, which might make the injection less effective or cause a reaction. Your doctor will use an appropriate disinfectant.
• Other Joint Treatments: Discuss with your doctor if you have recently received or are planning to receive other types of injections into your knee, such as corticosteroid injections. While not a direct interaction, your doctor will consider the timing and suitability of different treatments.
• Allergies: Always inform your doctor about all medications you are currently taking (prescription, over-the-counter, herbal products, supplements) and any allergies you have, especially to bacterial proteins (as GenVisc 850 is derived from a bacterial fermentation process) or to any components of hyaluronic acid preparations.

GenVisc 850 is administered by a healthcare professional following a specific dosage regimen.

• Standard Regimen: The typical treatment course for GenVisc 850 involves 5 injections, given once weekly for 5 consecutive weeks. Each injection contains 25 mg (2.5 mL) of sodium hyaluronate.
• Completion is Key: It is very important to complete the full series of 5 injections as prescribed by your doctor, even if you start to feel improvement after fewer injections. The full benefit and duration of relief are typically achieved after the complete course.
• Individual Response: While many patients experience pain relief after their third injection, the full effect can vary, and maximum benefit may take the full 5 injections.
• Repeat Treatment Cycles: The effectiveness of repeat treatment cycles (e.g., getting injections again after 6 months) has been studied and shown to be safe and effective, but your doctor will decide if and when repeat cycles are appropriate for you based on your response and ongoing symptoms.
• No Self-Administration: This is not a medication you can administer yourself. It must be given by a trained healthcare professional using sterile techniques.

GenVisc 850 is a prescription-only medication.

• Medical Consultation Required: You cannot obtain or administer GenVisc 850 without a valid prescription and administration by a licensed healthcare professional.
• Specific Indication: It is specifically indicated for the treatment of pain in osteoarthritis of the knee in patients who have not responded adequately to conservative non-pharmacologic therapy (like physical therapy or exercise) and simple pain relievers (like acetaminophen). This means your doctor will first assess your condition and history of other treatments.
• Specialist Oversight: The prescription and administration are typically overseen by specialists such as orthopedic surgeons, rheumatologists, physiatrists (physical medicine and rehabilitation doctors), or interventional pain physicians.
• Prior Authorization: In many healthcare systems, GenVisc 850 (and other hyaluronic acid injections) may require “prior authorization” from your insurance company to ensure coverage, as specific criteria often need to be met.
• Monitoring: Your doctor will monitor your progress closely during and after the treatment course to evaluate its effectiveness and check for any side effects.

1. Q: What is GenVisc 850 (injection)?
   A: A viscoelastic ophthalmic injection used to protect and cushion the eye during intraocular procedures.

2. Q: What condition or procedure is GenVisc 850 used for?
   A: Used as a space-occupying and protective viscoelastic during anterior segment surgeries (e.g., cataract surgery).

3. Q: How is GenVisc 850 administered?
   A: It is injected into the anterior chamber or surrounding intraocular space by a trained ophthalmic surgeon.

4. Q: Who should receive GenVisc 850 injection?
   A: Patients undergoing specific intraocular procedures as determined by their surgeon.

5. Q: What are common side effects?
   A: Temporary eye pressure changes, blurred vision, or local injection-site discomfort.

6. Q: Is GenVisc 850 approved for all ages?
   A: Approval depends on regulatory guidelines and clinical indication; consult the clinician.

7. Q: Can GenVisc 850 be used with other eye medications?
   A: Yes, but coordination with the surgeon is essential to manage potential interactions.

8. Q: Are there risks of infection with this injection?
   A: Infection risk exists with intraocular procedures; strict sterile technique reduces risk.

9. Q: How long does GenVisc 850 stay in the eye?
   A: It is temporary and designed to be cleared as part of the surgical recovery.

10. Q: Can GenVisc 850 cause allergic reactions?
    A: Possible; report any unusual symptoms to the surgeon promptly.

11. Q: Is GenVisc 850 a generic name or brand name?
    A: It is a branded product; generic equivalents may exist depending on region and formulation.

12. Q: What should I tell my doctor before receiving GenVisc 850?
    A: Medical history, allergies, current medications, and prior ocular surgeries.

13. Q: Can GenVisc 850 be used with other viscoelastic products?
    A: Usage is determined by the surgical plan and ophthalmologist.

14. Q: Are there preservative-free options?
    A: Some formulations may be preservative-free; discuss options with your surgeon.

15. Q: Is GenVisc 850 used in cataract surgery?
    A: Yes, commonly used to maintain space and protect tissues during cataract extraction.

16. Q: What should I expect during recovery after injection?
    A: Standard post-procedure monitoring; transient visual changes may occur.

17. Q: How is GenVisc 850 stored?
    A: Storage conditions are specified by the manufacturer and facility protocols.

18. Q: Is GenVisc 850 contraindicated in any conditions?
    A: Contraindications are determined by the surgeon based on ocular history and anatomy.

19. Q: Can GenVisc 850 be reused or recycled?
    A: It is a single-use product in a sterile delivery system.

20. Q: Where is GenVisc 850 available?
    A: Available through hospitals, surgical centers, and specialty ophthalmology suppliers.