diclofenac vs nabumetone
PlainMeds reviewed this comparison against our methodology in August 2026. It places FDA and CMS record fields side by side, without recommending either medication.
Side-by-side comparison of diclofenac and nabumetone. Data from FDA drug databases (Orange Book, NDC Directory, recalls, shortages) covering 20,000+ approved drugs, plus CMS pricing; see our methodology.
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Diclofenac is a gel that helps with arthritis pain in your hands, wrists, elbows, feet, ankles, or knees. It belongs to a class of drugs called NSAIDs.
Nabumetone is a medicine that helps reduce pain and swelling. It is a type of NSAID (nonsteroidal anti-inflammatory drug).
This medicine temporarily relieves arthritis pain. It is only for pain in your hands, wrists, elbows, feet, ankles, or knees. It may take up to 7 days to start working. If you still have pain after 7 days, stop using it.
Nabumetone is used to relieve the symptoms of osteoarthritis and rheumatoid arthritis. These conditions can cause pain, swelling, and stiffness in your joints. This medicine can help you feel better.
Diclofenac is an NSAID. It reduces pain and swelling by blocking substances in the body that cause inflammation.
Nabumetone works by reducing substances in the body that cause pain and inflammation. It blocks the production of prostaglandins. Prostaglandins contribute to inflammation and pain.
- • Pain
- • Headache
- • Diarrhea
- • Upset stomach
- • Abdominal pain
- • Constipation
- • Gas
- Pain 12,281
- Fatigue 11,317
- Rheumatoid Arthritis 9,241
- Rash 8,747
- Arthralgia 8,640
- Pain 461
- Nausea 372
- Fatigue 360
- Headache 316
- Arthralgia 307
No specific warnings noted.
NSAIDs like nabumetone can increase your risk of heart attack or stroke, which can be fatal. This risk may happen early in treatment and increases with longer use. You should not take this medicine if you are having heart bypass surgery (CABG). NSAIDs also increase the risk of serious stomach problems like bleeding and ulcers, which can be fatal. This can happen without warning, and older adults are at higher risk.
No pregnancy information available.
Talk to your doctor if you are pregnant, may become pregnant, or are breastfeeding. Nabumetone may harm your unborn baby. It is not known if nabumetone passes into breast milk.
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How to Read This diclofenac vs nabumetone Comparison
diclofenac is classified in the Nonsteroidal Anti-Inflammatory Drug (NSAID) drug class, while nabumetone sits within the Nonsteroidal Anti-Inflammatory Drug (NSAID) class. Because both drugs share the same classification, they are often considered interchangeable in theory, but clinical outcomes rarely track that cleanly. Both drugs are split between OTC and prescription status, which affects access and supervision.
Adverse event totals above are pulled from the FDA's Adverse Event Reporting System (FAERS). For these top-ranked reactions alone, diclofenac has 50,226 submissions while nabumetone has 1,816. Those figures reflect cumulative reporting volume, not per-patient risk, so older, widely dispensed drugs typically look worse on count alone. No direct interaction between these two drugs is listed in our FDA-derived dataset, though co-prescription still warrants pharmacist review. Serious warnings, pregnancy guidance, and contraindications can differ even when indications overlap.
A table cannot represent individual circumstances. Data here is sourced from FDA Structured Product Labels (SPL) and FAERS, both of which update as manufacturers and clinicians submit new information. This registry does not provide medical, treatment, substitution, or medication-change directions for diclofenac or nabumetone.
Registry boundary: This comparison displays source-record fields and does not provide individualized medical direction.