leflunomide vs pioglitazone
Side-by-side comparison of leflunomide and pioglitazone. 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.
Recommendation: Your doctor should monitor you for signs of increased exposure to pioglitazone.
Arava
Actos
Leflunomide is a drug that can help reduce the symptoms of rheumatoid arthritis. It works by slowing down the body's immune system.
Pioglitazone (Actos) is a medicine that helps control blood sugar levels in adults with type 2 diabetes. It works along with diet and exercise.
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.
Pioglitazone is used to help manage blood sugar in adults who have type 2 diabetes. It is used in addition to diet and exercise. This medicine will not work for type 1 diabetes or diabetic ketoacidosis.
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.
Pioglitazone belongs to a class of drugs called thiazolidinediones. It makes your body more sensitive to insulin, which helps lower blood sugar. It works by activating a certain receptor in your body called PPAR gamma.
- • Diarrhea
- • Respiratory infection
- • Nausea
- • Headache
- • Rash
- • Upper respiratory infection
- • Headache
- • Sinus infection
- • Muscle pain
- • Sore throat
- Rheumatoid arthritis 24,921
- Pain 20,055
- Joint pain 16,943
- Swollen joint 15,567
- Tiredness 15,384
- Cancer of the bladder 8,736
- Increased blood sugar 3,385
- Feeling sick to your stomach 2,917
- Weight loss 2,084
- Loose or watery stools 1,680
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.
Pioglitazone can cause or worsen heart failure in some people. Watch for signs like rapid weight gain, shortness of breath, and swelling. If you have heart failure, it should be managed, and stopping or lowering the dose of pioglitazone should be considered. If you have severe heart failure (NYHA Class III or IV), you should not start taking pioglitazone.
Do not take leflunomide if you are pregnant. It can cause birth defects. If you are breastfeeding, you should stop while taking this medicine.
It is not known if pioglitazone can harm an unborn baby. Talk to your doctor if you are pregnant or plan to become pregnant. It is also not known if pioglitazone passes into breast milk, so talk to your doctor about breastfeeding while taking this medicine.
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How to Read This leflunomide vs pioglitazone Comparison
leflunomide is classified in the Disease-Modifying Antirheumatic Drug (DMARD) drug class, while pioglitazone 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 pioglitazone has 18,802. 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 slows down the process your liver uses to break down pioglitazone. this can result in higher levels of pioglitazone in your blood.. Serious warnings, pregnancy guidance, and contraindications can differ even when indications overlap.
A table cannot substitute for clinical judgment. Effectiveness, tolerability, drug-drug interactions with your other medications, kidney and liver function, pregnancy status, insurance formulary, and price all feed into a decision that only a licensed prescriber can make responsibly. Data here is sourced from FDA Structured Product Labels (SPL) and FAERS, both of which update as manufacturers and clinicians submit new information. This page is for educational purposes only, is not medical advice, and should not be used to self-switch between leflunomide and pioglitazone - always consult your physician or pharmacist first.
Important: This comparison is for informational purposes only. Drug effects vary between individuals. Always consult your doctor or pharmacist for personalized medical advice.