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Remdesivir and Hydroxychloroquine Interaction

Drug interaction information between Remdesivir and Hydroxychloroquine.

Remdesivir and Hydroxychloroquine have a documented moderate interaction in FDA labeling.

FDA drug labeling documents a moderate-severity interaction between Remdesivir and Hydroxychloroquine. 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

Remdesivir

Nucleotide Analog (Antiviral)

Drug B

Hydroxychloroquine

Disease-Modifying Antirheumatic Drug (DMARD)

How They Interact

Hydroxychloroquine can interfere with how remdesivir works against the virus. This means the antiviral treatment might not be able to fight the infection effectively.

What To Do

This combination is not recommended. Your healthcare provider should avoid giving you these two drugs at the same time.

FDA Label Information

7 DRUG INTERACTIONS 7.1 Effects of Other Drugs on VEKLURY Due to potential antagonism based on data from cell culture experiments, concomitant use of VEKLURY with chloroquine phosphate or hydroxychloroquine sulfate is not recommended [see Warnings and Precautions (5.3) and Microbiology (12.4) ].

Remdesivir Also Interacts With

View all Remdesivir interactions →

Hydroxychloroquine Also Interacts With

View all Hydroxychloroquine interactions →

Frequently Asked Questions

Can I take Remdesivir and Hydroxychloroquine together?

This is a moderate interaction. This combination is not recommended. Your healthcare provider should avoid giving you these two drugs at the same time.

How serious is the interaction between Remdesivir and Hydroxychloroquine?

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

Why do Remdesivir and Hydroxychloroquine interact?

Hydroxychloroquine can interfere with how remdesivir works against the virus. This means the antiviral treatment might not be able to fight the infection effectively.

Understanding the Remdesivir and Hydroxychloroquine Interaction

FDA-approved prescribing information for these two drugs flags their combination as a moderate-severity interaction. Remdesivir belongs to the Nucleotide Analog (Antiviral) class and Hydroxychloroquine belongs to the Disease-Modifying Antirheumatic Drug (DMARD) class - two categories that can collide when co-prescribed. The mechanism described in FDA labeling is: Hydroxychloroquine can interfere with how remdesivir works against the virus. 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. Remdesivir has 2 total documented interactions on file in this dataset, and Hydroxychloroquine 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: This combination is not recommended. 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 Remdesivir or Hydroxychloroquine 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.