Increased bleeding time has been seen when Omacor is given in conjunction with acetylsalicylic acid and warfarin, but without haemorrhagic complications (see Precautions).
Acetylsalicylic acid: Patients should be informed about potential increased bleeding time.
Warfarin and coumarin: The prothrombin time/international normalized ratio (PT/INR) must be monitored during combination treatment with Omacor among patients receiving blood-thinning therapy, and when treatment with Omacor is discontinued.