Drug interactions between Coumadin and Vantin
Interactions between your drugs
warfarin ↔ cefpodoxime
Applies to:Coumadin (warfarin) and Vantin (cefpodoxime)
Consumer information for this interaction is not currently available.
MONITOR: Cephalosporins may potentiate the anticoagulant effects of vitamin K antagonists. Possible mechanisms include inhibited growth of vitamin K-producing intestinal bacteria, inhibited production of vitamin K-dependent clotting factors via a methylthiotetrazole (MTT) side chain (e.g., cefamandole, cefmetazole, cefoperazone, cefotetan), and/or inhibited platelet activity. Decreased prothrombin activity has been reported during treatment with various cephalosporins. Risk factors include renal or hepatic impairment, poor nutritional state, protracted antimicrobial therapy, and chronic anticoagulation therapy.
MANAGEMENT: Prothrombin time and INR should be monitored and the patient closely observed for signs of bleeding. The anticoagulant dose may be adjusted as indicated. Patients should be advised to notify their physicians if they experience any signs or symptoms that may indicate excessive anticoagulation, such as unusual or prolonged bleeding, bruising, coffee ground emesis, change in stool or urine color, headache, dizziness, or weakness.
- "Product Information. Suprax (cefixime)." Lupin Pharmaceuticals Inc, Baltimore, MD.
- Wood T, Johnson K, Naylor S, Weinshilboum R "Cefazolin administration and 2-methyl-1,3,4-thiadiazole-5-thiol in human tissue: possible relationship to hypoprothrombinemia." Drug Metab Dispos 30 (2002): 1123-1128
- Cerner Multum, Inc. "Canadian Product Information." O 0 (2015):
Drug Interaction Classification
|No information available.|
Do not stop taking any medications without consulting your healthcare provider.