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Part Three: Warfarin Drug Interactions
Drug Interactions with Warfarin:
Inhibition
|
Level of Evidence |
No Effect |
| I |
Alcohol,
antacids, atenolol, bumetadine, enoxacin, famotidine,
fluoxetine, ketorolac metoprolol, naproxen, nizatidine,
psyllium, ranitidine‡ |
| II |
Ibuprofen,
ketoconazole |
| III |
|
| IV |
Diltiazem,
tobacco, vancomycin |
Notes:
This slide lists the venous drugs
and foods that have been reported to have no effect on warfarin
The strength of the evidence is shown in the left hand column.
With excessive consumption, alcohol potentiates the effect,
but when limited to two glasses of wine /day, it has been
reported not to influence the anticoagulant effect of warfarin.
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