Synvisc: A Joint Fluid Replacement for Knee Arthritis

Synvisc is a prescription injection that replaces the natural lubricating fluid in knee joints affected by osteoarthritis, providing cushioning and pain relief when other treatments haven't been effective.

If you're dealing with knee osteoarthritis and looking for alternatives to surgery or daily pain medications, understanding what Synvisc is and how it works can help you make informed decisions about your treatment options.

What Is Synvisc?

Synvisc is a viscosupplement containing hylan G-F 20, a modified form of hyaluronic acid that occurs naturally in healthy joint fluid. The medication is manufactured by Sanofi (Sanofi Genzyme) and has been FDA-approved for treating knee osteoarthritis since 1997.

Brand Name vs. Generic

• Brand names: Synvisc and Synvisc-One
• Generic name: Hylan G-F 20
• Drug class: Viscosupplement/hyaluronic acid injection
• Generic availability: No generic version is available

FDA Approval and Classification

• FDA approved: Yes, since 1997
• Controlled substance: No - Synvisc is not a controlled substance
• DEA schedule: Not applicable
• Prescription required: Yes

How Synvisc Is Different

Unlike many arthritis treatments that mask pain, Synvisc works by actually replacing the deteriorated joint fluid in your knee. The hyaluronic acid in Synvisc is cross-linked, making it thicker and longer-lasting than the natural hyaluronic acid that's been lost due to osteoarthritis.

What Is Synvisc Used For?

FDA-Approved Uses

Synvisc is specifically approved for treating pain in osteoarthritis of the knee in patients who have failed to respond adequately to:

• Conservative nonpharmacologic therapy (physical therapy, exercise, weight management)
• Simple analgesics (over-the-counter pain relievers like acetaminophen)

This means Synvisc is typically considered after first-line treatments haven't provided sufficient relief, but before more invasive options like knee replacement surgery.

Off-Label Uses

Some doctors may use Synvisc for:

• Shoulder osteoarthritis - Recognized by some insurance payers
• Hip osteoarthritis - Limited evidence, not commonly covered by insurance

However, these uses aren't FDA-approved, and insurance coverage may be limited for off-label applications.

Who Is a Good Candidate?

You might be a candidate for Synvisc if you:

• Have been diagnosed with knee osteoarthritis
• Experience ongoing knee pain despite conservative treatments
• Want to avoid or delay knee replacement surgery
• Have tried other treatments without adequate relief
• Are looking to reduce reliance on oral pain medications

How Is Synvisc Taken?

Administration Method

Synvisc is administered as an injection directly into the knee joint (intra-articular injection) by a trained healthcare professional. You cannot give yourself Synvisc injections at home.

Dosage Forms and Schedules

Synvisc comes in two formulations:

Synvisc (Traditional)

• Dosage: Three separate injections of 2ml each
• Schedule: One injection per week for three consecutive weeks
• Total treatment: 6ml over 3 weeks

Synvisc-One

• Dosage: Single injection of 6ml
• Schedule: One-time treatment
• Total treatment: 6ml in one visit

Injection Procedure

The injection process typically involves:

• Cleaning and numbing the injection site
• Using ultrasound guidance (when available) for precise placement
• Injecting the medication directly into the joint space
• Monitoring for immediate adverse reactions

Post-Injection Care

After your Synvisc injection, you should:

• Avoid strenuous activities for 48 hours
• Apply ice to reduce swelling if needed
• Follow up with your doctor as recommended
• Watch for signs of infection or unusual reactions

Who Should Not Take Synvisc?

Contraindications

Synvisc should not be used in patients with:

• Known hypersensitivity to hyaluronan preparations
• Infections or skin diseases at the injection site
• Allergies to avian proteins, eggs, or poultry (Synvisc is derived from chicken combs)

Use with Caution

Special consideration is needed for patients with:

• Joint infections or severe joint inflammation
• Bleeding disorders
• Immune system disorders
• Previous allergic reactions to similar treatments

Pregnancy and Breastfeeding

The safety of Synvisc during pregnancy and breastfeeding hasn't been established. Discuss alternative treatments with your doctor if you're pregnant, planning to become pregnant, or nursing.

How Much Does Synvisc Cost?

Cash Prices

Without insurance, Synvisc costs typically range from:

• Synvisc-One: $600-$1,200 for the medication
• Office visit fee: $50-$200
• Injection procedure fee: $100-$300
• Imaging guidance (if needed): $100-$300

Total cash cost: $850-$2,000 per treatment course

Insurance Coverage

Many insurance plans cover Synvisc, but typically require:

• Prior authorization - Documentation that conservative treatments have failed
• Step therapy - Proof you've tried other treatments first
• Specialist referral - May need to see an orthopedist or rheumatologist

Medicare covers Synvisc when medical criteria are met, usually with a copay of $50-$200.

Savings Options

Several programs can help reduce Synvisc costs:

• Sanofi Patient Connection - Manufacturer assistance program
• Patient assistance programs - For qualifying low-income patients
• Pharmacy discount programs - May offer modest savings

How Effective Is Synvisc?

Clinical Results

Clinical studies show that Synvisc can provide:

• Pain relief lasting 3-6 months
• Improved knee function and mobility
• Reduced need for oral pain medications
• Better quality of life scores

Timeline for Results

• Initial response: Some patients notice improvement within 1-2 weeks
• Peak benefit: Usually achieved by 4-12 weeks after treatment
• Duration: Effects typically last 3-6 months, sometimes longer

Success Rates

Approximately 60-80% of patients experience clinically meaningful pain relief from Synvisc, though individual results vary based on:

• Severity of arthritis
• Overall health status
• Activity level
• Previous treatments tried

Alternatives to Synvisc

If Synvisc isn't right for you, other viscosupplements include:

• Hyalgan - Sodium hyaluronate, 5-injection series
• Euflexxa - Non-avian sodium hyaluronate, 3 injections
• Orthovisc - High molecular weight hyaluronan, 3-4 injections
• Gel-One - Single injection hyaluronic acid
• Monovisc - Single injection treatment

Finding a Provider

Synvisc injections are typically administered by:

• Orthopedic surgeons
• Rheumatologists
• Sports medicine physicians
• Pain management specialists

Finding the right provider is important for both safety and insurance coverage. Look for doctors with experience in viscosupplementation who accept your insurance.

Final Thoughts

Synvisc offers a middle-ground treatment option for knee osteoarthritis - more advanced than conservative treatments but less invasive than surgery. While it's not right for everyone, many patients find significant pain relief that can last several months.

The key is working with an experienced provider who can determine if you're a good candidate and help navigate insurance coverage. Understanding how Synvisc works can help you have more informed discussions with your healthcare team about whether this treatment fits your needs.

If you decide to move forward with Synvisc, knowing what side effects to expect can help you feel more confident about the treatment process.

Ready to explore Synvisc as a treatment option? Find pharmacies with Synvisc in stock near you to discuss with your healthcare provider.