Lansoprazole and Tacrolimus Topical Interaction
Drug interaction information between Lansoprazole and Tacrolimus Topical.
Lansoprazole and Tacrolimus Topical have a documented moderate interaction in FDA labeling.
FDA drug labeling documents a moderate-severity interaction between Lansoprazole and Tacrolimus Topical. 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.
How They Interact
Lansoprazole makes it harder for your body to get rid of tacrolimus. This can cause the medicine to build up to unsafe levels in your system.
What To Do
Your healthcare provider should monitor your blood levels frequently. They may need to lower your tacrolimus dose to prevent serious side effects.
FDA Label Information
Mild or Moderate CYP3A Inhibitors: Clotrimazole, antibiotics (e.g., verapamil, diltiazem, nifedipine, nicardipine), amiodarone, danazol, ethinyl estradiol, cimetidine, lansoprazole and omeprazole May increase tacrolimus whole blood trough concentrations and increase the risk of serious adverse reactions (e.g., neurotoxicity, QT prolongation) [see Warnings and Precautions ( 5.7 , 5.10 , 5.11 )] .
Lansoprazole Also Interacts With
- Amoxicillin major
- Clarithromycin major
- Rifampin moderate
- Warfarin minor
- Methotrexate minor
Tacrolimus Topical Also Interacts With
- Omeprazole moderate
- Estradiol moderate
- Diltiazem moderate
- Nifedipine moderate
- Ketoconazole moderate
Frequently Asked Questions
Can I take Lansoprazole and Tacrolimus Topical together?
This is a moderate interaction. Your healthcare provider should monitor your blood levels frequently. They may need to lower your tacrolimus dose to prevent serious side effects.
How serious is the interaction between Lansoprazole and Tacrolimus Topical?
This interaction is classified as "moderate" severity by the FDA. Moderate interactions may worsen your condition or change how your medications work.
Why do Lansoprazole and Tacrolimus Topical interact?
Lansoprazole makes it harder for your body to get rid of tacrolimus. This can cause the medicine to build up to unsafe levels in your system.
Understanding the Lansoprazole and Tacrolimus Topical Interaction
FDA-approved prescribing information for these two drugs flags their combination as a moderate-severity interaction. Lansoprazole belongs to the Proton Pump Inhibitor (PPI) class and Tacrolimus Topical belongs to the Calcineurin Inhibitor (Topical) class - two categories that can collide when co-prescribed. The mechanism described in FDA labeling is: Lansoprazole makes it harder for your body to get rid of tacrolimus. 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. Lansoprazole has 14 total documented interactions on file in this dataset, and Tacrolimus Topical has 25. 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 healthcare provider should monitor your blood levels frequently. 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 Lansoprazole or Tacrolimus Topical 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.
Read our methodology - how this data is sourced, computed, and verified.