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Alogliptin and Topiramate Interaction

Drug interaction information between Alogliptin and Topiramate.

Alogliptin and Topiramate have a documented moderate interaction in FDA labeling.

FDA drug labeling documents a moderate-severity interaction between Alogliptin and Topiramate. 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

Alogliptin

DPP-4 Inhibitor

Drug B

Topiramate

Anticonvulsant

How They Interact

Topiramate can stop your kidneys from clearing metformin properly, which may cause the drug to build up to dangerous levels.

What To Do

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

FDA Label Information

Examples: Topiramate, zonisamide, acetazolamide or dichlorphenamide Drugs that Reduce Metformin Clearance Clinical Impact: Concomitant use of drugs that interfere with common renal tubular transport systems involved in the renal elimination of metformin (e.g., organic cationic transporter-2 [OCT2]/multidrug and toxin extrusion [MATE] inhibitors) could increase systemic exposure to metformin and may increase the risk for lactic acidosis [see Clinical Pharmacology (12.3) ] .

Frequently Asked Questions

Can I take Alogliptin and Topiramate together?

This is a moderate interaction. Your doctor may need to monitor you more closely for side effects or adjust your dosage.

How serious is the interaction between Alogliptin and Topiramate?

This interaction is classified as "moderate" severity by the FDA. Moderate interactions may worsen your condition or change how your medications work.

Why do Alogliptin and Topiramate interact?

Topiramate can stop your kidneys from clearing metformin properly, which may cause the drug to build up to dangerous levels.

Understanding the Alogliptin and Topiramate Interaction

FDA-approved prescribing information for these two drugs flags their combination as a moderate-severity interaction. Alogliptin belongs to the DPP-4 Inhibitor class and Topiramate belongs to the Anticonvulsant class - two categories that can collide when co-prescribed. The mechanism described in FDA labeling is: Topiramate can stop your kidneys from clearing metformin properly, which may cause the drug to build up to dangerous levels. 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. Alogliptin has 7 total documented interactions on file in this dataset, and Topiramate has 30. 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 dosage. 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 Alogliptin or Topiramate 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.