Acetaminophen and Cidofovir Interaction
Drug interaction information between Acetaminophen and Cidofovir.
Acetaminophen and Cidofovir have a documented minor interaction in FDA labeling.
FDA drug labeling documents a minor-severity interaction between Acetaminophen and Cidofovir. 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
Probenecid is taken alongside cidofovir and can interfere with how your body processes and removes acetaminophen. This could result in higher levels of acetaminophen in your system.
What To Do
Check with your doctor before using acetaminophen while receiving cidofovir. They may recommend a lower dose to ensure your safety.
FDA Label Information
Drug Interactions Probenecid Probenecid is known to interact with the metabolism or renal tubular excretion of many drugs (e.g., acetaminophen, acyclovir, angiotensin-converting enzyme inhibitors, aminosalicylic acid, barbiturates, benzodiazepines, bumetanide, clofibrate, methotrexate, famotidine, furosemide, nonsteroidal anti-inflammatory agents, theophylline, and zidovudine).
Acetaminophen Also Interacts With
- Dapsone Topical moderate
- Lidocaine Topical moderate
- Acetaminophen/Oxycodone minor
- Carbamazepine minor
- Codeine minor
Cidofovir Also Interacts With
- Vancomycin major
- Gentamicin major
- Tobramycin major
- Amikacin major
- Amphotericin B major
Frequently Asked Questions
Can I take Acetaminophen and Cidofovir together?
This is a minor interaction. Check with your doctor before using acetaminophen while receiving cidofovir. They may recommend a lower dose to ensure your safety.
How serious is the interaction between Acetaminophen and Cidofovir?
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 Acetaminophen and Cidofovir interact?
Probenecid is taken alongside cidofovir and can interfere with how your body processes and removes acetaminophen. This could result in higher levels of acetaminophen in your system.
Understanding the Acetaminophen and Cidofovir Interaction
FDA-approved prescribing information for these two drugs flags their combination as a minor-severity interaction. Acetaminophen belongs to the Analgesic / Antipyretic class and Cidofovir belongs to the Antiviral (Nucleotide Analog) class - two categories that can collide when co-prescribed. The mechanism described in FDA labeling is: Probenecid is taken alongside cidofovir and can interfere with how your body processes and removes acetaminophen. 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. Acetaminophen has 23 total documented interactions on file in this dataset, and Cidofovir has 16. 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: Check with your doctor before using acetaminophen while receiving cidofovir. 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 Acetaminophen or Cidofovir 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.