Increased bleeding time has been seen when Trademark is given in conjunction with oral anticoagulants or other drugs affecting coagulation (e.g. acetylsalicylic acid or NSAIDs). This may result from a possible additive effect on bleeding time, but haemorrhagic complications have not been documented (see Precautions).
Acetylsalicylic acid: Patients should be informed about potentially increased bleeding time.
Anti-coagulants: Omacor has been given in conjunction with warfarin without haemorrhagic complications. However, the prothrombin time/International normalized ratio (PT/INR) must be checked when Omacor is combined with drug affecting PT/INR or when treatment with Omacor is stopped.