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Pioglitazone and Abiraterone Interaction

Drug interaction information between Pioglitazone and Abiraterone.

Pioglitazone and Abiraterone have a documented minor interaction in FDA labeling.

FDA drug labeling documents a minor-severity interaction between Pioglitazone and Abiraterone. Major interactions are generally avoided, moderate ones may need monitoring or a dose adjustment, and minor ones are usually low-risk. This page shows the documented mechanism and guidance. Label-documented interactions are not a complete safety review, so always confirm your own medications with a pharmacist or doctor. Educational information, not medical advice.

Drug A

Pioglitazone

Thiazolidinedione

Drug B

Abiraterone

CYP17 Inhibitor

How They Interact

Abiraterone blocks a protein in the liver that normally breaks down pioglitazone. This causes pioglitazone to stay in your body longer and reach higher levels.

What To Do

Your doctor may need to monitor you more closely for side effects or adjust your dose of pioglitazone.

FDA Label Information

In a CYP2C8 drug-drug interaction trial in healthy subjects, the AUC of pioglitazone (CYP2C8 substrate) was increased by 46% when pioglitazone was given together with a single dose of 1,000 mg abiraterone acetate.

Frequently Asked Questions

Can I take Pioglitazone and Abiraterone together?

This is a minor interaction. Your doctor may need to monitor you more closely for side effects or adjust your dose of pioglitazone.

How serious is the interaction between Pioglitazone and Abiraterone?

This interaction is classified as "minor" severity by the FDA. Minor interactions are unlikely to cause significant problems but should still be mentioned to your healthcare provider.

Why do Pioglitazone and Abiraterone interact?

Abiraterone blocks a protein in the liver that normally breaks down pioglitazone. This causes pioglitazone to stay in your body longer and reach higher levels.

Understanding the Pioglitazone and Abiraterone Interaction

FDA-approved prescribing information for these two drugs flags their combination as a minor-severity interaction. Pioglitazone belongs to the Thiazolidinedione class and Abiraterone belongs to the CYP17 Inhibitor class - two categories that can collide when co-prescribed. The mechanism described in FDA labeling is: Abiraterone blocks a protein in the liver that normally breaks down pioglitazone. Severity tiers matter: major flags generally advise avoidance, moderate flags often require monitoring or dose adjustment, and minor flags may only call for awareness.

Context around a specific patient determines real-world impact. Pioglitazone has 10 total documented interactions on file in this dataset, and Abiraterone has 7. Each additional medication compounds the interaction surface, which is why pharmacists run full-profile checks rather than evaluating one pair at a time. FDA-derived guidance for this pair is: Your doctor may need to monitor you more closely for side effects or adjust your dose of pioglitazone. Timing of doses, renal and hepatic function, age, and other concurrent prescriptions all shape whether a labeled interaction matters clinically.

An interaction flag is not a verdict. A large share of labeled interactions are managed routinely in clinical practice, the fix may be as simple as spacing doses or adding a monitoring test. Others require the prescriber to choose a different medication entirely. This page surfaces FDA-sourced labeling and openFDA data for educational purposes only; it is not medical advice and cannot account for your full clinical picture. Never start, stop, or adjust either Pioglitazone or Abiraterone based on a web page, speak with your prescriber or pharmacist before making any change.

Sources: FDA Drug Labels (SPL) via openFDA (2026). This is for informational purposes only and is not medical advice. Always consult your healthcare provider about drug interactions.