Affordability Check
How to afford Diflunisal
Generic name: Diflunisal
Pick how you're covered. We'll show you the cheapest legitimate way to get Diflunisal — your insurance copay, manufacturer savings, charity grants, or cash price. It takes 30 seconds and we never ask for your personal information.
Pick an option above to see your specific path.
Different insurance means different laws and different savings. For example, Medicare patients cannot use manufacturer copay cards (federal law) — but the manufacturer almost always has a Patient Assistance Program that gives the drug free.
About Diflunisal and its cost
What is this medication? Diflunisal is a nonsteroidal anti-inflammatory drug, also known as an NSAID, which is primarily used to treat mild to moderate pain and reduce inflammation. It is a derivative of salicylic acid, making it chemically related to aspirin, though it generally lasts longer in the body. This medication is most commonly prescribed to manage the pain, tenderness, and swelling associated with chronic conditions like osteoarthritis and rheumatoid arthritis. By inhibiting the production of certain natural substances that cause inflammation, it helps improve joint function and overall mobility for patients dealing with these disorders.
Beyond its use for chronic conditions, diflunisal may also be utilized to alleviate acute pain from minor injuries or dental work. Because it has a relatively long half-life, it provides sustained relief and typically requires fewer doses than some other pain medications. Patients should follow their doctor's instructions carefully, as this drug can cause gastrointestinal issues or other side effects common to the NSAID class. It is important to disclose any existing medical conditions or other medications to a healthcare provider before starting treatment to ensure the drug is used safely and effectively.
Diflunisal is made by Merck. Like most brand-name drugs, it's priced at a high list price — but patients rarely pay that list price. The options above are the real paths most people use to get it affordably.
Common questions
What's the cheapest way to afford Diflunisal?
It depends on your insurance. On Medicare, apply for the manufacturer's Patient Assistance Program (PAP) — it gives the drug free if you meet income requirements. With private insurance, the manufacturer copay card usually drops your copay to $0-$25. Uninsured patients should compare the PAP with Cost Plus Drugs cash price.
Can I use a copay card with Medicare for Diflunisal?
No — federal law (the Anti-Kickback Statute) prohibits manufacturer copay cards on Medicare, Medicaid, TriCare, and VA prescriptions. But Merck has a separate Patient Assistance Program for Medicare beneficiaries. Check the options above.
Does my Medicare Part D plan cover Diflunisal?
Part D coverage varies by plan. We query the CMS Prescription Drug Plan file to show you what percentage of plans cover it and at what tier. For your exact copay, pick "Medicare" above and check your plan's Summary of Benefits, or log in to Medicare.gov.
How long does a Patient Assistance Program take?
Most PAPs take 2-6 weeks from application to first fill. Ask the manufacturer about a "bridge supply" — many will ship 30 days free while your application is being reviewed so you don't go without the drug.
What if I have a high-deductible plan?
For generics, Cost Plus Drugs cash price is often cheaper than your deductible-phase copay. For brand names, the manufacturer copay card almost always wins. A GoodRx coupon can be a last resort for uncovered drugs, but it doesn't count toward your deductible.
Are there charity grants for Osteoarthritis?
Charities like HealthWell Foundation, PAN Foundation, Good Days, and the National Organization for Rare Disorders provide copay help for specific conditions. Funds often run out mid-year — apply early. We list the specific grants for your condition in the options above.
More about Diflunisal
Full Diflunisal drug page
FDA label, prior authorization rules, full indications list
More options for Osteoarthritis
Drugs, grants, and assistance for this condition
Guide to Patient Assistance Programs
How PAPs work, who qualifies, typical wait times
If your insurance denied coverage
5-level appeal playbook — Medicare has a 60% win rate at Level 3