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3 Cards in this Set

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What things will increase INR when on warfarin? (More bleeding)

Liver disease, cranberry juice, NSAIDs


P450 inhibitors: ciprofloxacin, erythromycin, isoniazid, cimetidine, omeprazole, amiodarone, allopurinol, fluconazole, SSRIs, alcohol, tamoxifen

Which things decrease INR? (More clotting)

Anti-epileptics (phenytoin, carbamazepine), rifampicin, St. John’s wort, chronic alcohol


PC BRAS


Phenytoin, Carbamazepine, Barbiturates, Rifampicin, Alcohol, Sulphonylureas

What does St. John’s wort affect?

Decreases levels of warfarin, ciclosporin, COCP