Clarithromycin and Dabigatran interaction

Clarithromycin and Dabigatran: both prescribing labels flag this combination with the strongest language, such as a contraindication, a boxed warning, or an instruction to avoid it.

Major

Do not combine without a prescriber's guidance. The label language below is the strongest FDA uses.

What the FDA labels say

From the Dabigatran (Pradaxa) label · effective 2025-06-25

Major

Avoid use of PRADAXA Capsules and P-gp inhibitors in patients with severe renal impairment (CrCl 15-30 mL/min) [see Drug Interactions (7.1) and Use in Specific Populations (8.6) ] .

Warnings and precautionsby drug classView label on DailyMed
Major

Treatment and Reduction in the Risk of Recurrence of Deep Venous Thrombosis and Pulmonary Embolism in Adult Patients Avoid use of PRADAXA Capsules and concomitant P-gp inhibitors in patients with CrCl < 50 mL/min [see Drug Interactions (7.2) and Use in Specific Populations (8.6) ] .

Warnings and precautionsby drug classView label on DailyMed
Major

Prophylaxis of Deep Vein Thrombosis and Pulmonary Embolism in Adult Patients Following Hip Replacement Surgery Avoid use of PRADAXA Capsules and concomitant P-gp inhibitors in patients with CrCl < 50 mL/min [see Drug Interactions (7.3) and Use in Specific Populations (8.6) ] .

Warnings and precautionsby drug classView label on DailyMed
Major

P-gp inhibitors in adult patients with CrCl 30-50 mL/min: Reduce dosage or avoid ( 7 )

Drug interactionsby drug classView label on DailyMed
Major

P-gp inhibitors in adult patients with CrCl < 30 mL/min: Not recommended ( 7 )

Drug interactionsby drug classView label on DailyMed

From the Clarithromycin label · effective 2026-01-01

Moderate

Oral Anticoagulants: There is a risk of serious hemorrhage and significant elevations in INR and prothrombin time when clarithromycin is co-administered with warfarin.

Warnings and precautionsby drug classView label on DailyMed
Moderate

Monitor INR and prothrombin times frequently while patients are receiving clarithromycin tablets and oral anticoagulants concurrently [see Drug Interactions ( 7 )] .

Warnings and precautionsby drug classView label on DailyMed
Moderate

Oral Anticoagulants: Warfarin Use With Caution Oral anticoagulants: Spontaneous reports in the postmarketing period suggest that concomitant administration of clarithromycin and oral anticoagulants may potentiate the effects of the oral anticoagulants.

Drug interactionsby drug classView label on DailyMed
Moderate

Prothrombin times should be carefully monitored while patients are receiving clarithromycin and oral anticoagulants simultaneously [see Warnings and Precautions ( 5.4 )] .

Drug interactionsby drug classView label on DailyMed

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Not medical advice. Interaction Checker quotes FDA label text and NIH fact sheets. Whether an interaction matters for you depends on doses, timing, kidney and liver function, and other conditions. Confirm with a pharmacist or prescriber.