Answer
Altered prothrombin time has been reported with ranitidine hydrochloride and coumarin anticoagulants such as warfarin, so close monitoring for increased or decreased prothrombin time is recommended during concurrent treatment because of warfarin’s narrow therapeutic index.
Sources for this answer
- Gavilast Heartburn and Indigestion 75mg Film-coated tabletsReckitt Benckiser Healthcare (UK) Ltd · emc · SmPC §4.5 Interaction with other medicinal products · Version 2Document updated
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