leflunomide vs rosiglitazone
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 leflunomide and rosiglitazone. Data from FDA drug databases (Orange Book, NDC Directory, recalls, shortages) covering 20,000+ approved drugs, plus CMS pricing; see our methodology.
minor Known Drug Interaction
In patients taking leflunomide, exposure of drugs metabolized by CYP2C8 (e.g., paclitaxel, pioglitazone, repaglinide, rosiglitazone) may be increased.
Arava
Avandia
Leflunomide is a drug that can help reduce the symptoms of rheumatoid arthritis. It works by slowing down the body's immune system.
No summary available.
Leflunomide treats active rheumatoid arthritis in adults. Rheumatoid arthritis is a disease that causes pain, swelling, and stiffness in the joints. This medicine can help reduce these symptoms.
Information not available.
Leflunomide is a pyrimidine synthesis inhibitor. This means it blocks a certain process in your body. By blocking this process, it can reduce inflammation and slow down the damage to your joints.
Information not available.
- • Diarrhea
- • Respiratory infection
- • Nausea
- • Headache
- • Rash
- • Nausea
- • Vomiting
- • Diarrhea
- • Headache
- • Upset stomach
- Rheumatoid Arthritis 24,923
- Pain 20,055
- Arthralgia 16,941
- Joint Swelling 15,567
- Fatigue 15,384
No adverse event reports.
This drug can cause serious harm to an unborn baby. If you are pregnant or could become pregnant, you should not take this medicine. This drug can also cause serious liver problems. If you have liver problems, you should not take this medicine. Your doctor will monitor your liver with blood tests.
No specific warnings noted.
Do not take leflunomide if you are pregnant. It can cause birth defects. If you are breastfeeding, you should stop while taking this medicine.
No pregnancy information available.
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How to Read This leflunomide vs rosiglitazone Comparison
leflunomide is classified in the Disease-Modifying Antirheumatic Drug (DMARD) drug class, while rosiglitazone sits within the Thiazolidinedione class. Drugs from different classes work through distinct mechanisms, so a head-to-head comparison illustrates trade-offs rather than equivalence. Both drugs are prescription-only, so a licensed provider must authorize use.
Adverse event totals above are pulled from the FDA's Adverse Event Reporting System (FAERS). For these top-ranked reactions alone, leflunomide has 92,870 submissions while rosiglitazone has 0. Those figures reflect cumulative reporting volume, not per-patient risk, so older, widely dispensed drugs typically look worse on count alone. These two drugs have a known minor interaction flagged in FDA labeling, attributed to leflunomide blocks the liver enzyme responsible for breaking down rosiglitazone. this results in higher amounts of rosiglitazone staying in your system.. 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 leflunomide or rosiglitazone.
Registry boundary: This comparison displays source-record fields and does not provide individualized medical direction.