Answer
Erlotinib (Tarceva) with warfarin has been associated with increased International Normalized Ratio (INR) and bleeding events, some fatal; regular monitoring of prothrombin time or INR is recommended.
Sources for this answer
- Tarceva 25 mg, 100 mg & 150 mg Film-coated TabletsRoche Products Limited · emc · SmPC §4.5 Interaction with other medicinal products · Version 11Document updated
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