Warfarin Cyclophosphamide

A4 34.1 Acetaminophen, caffeine carbamazepine, codeine, cortisol, erythromycin, cyclophosphamide, (S)-and (R)-warfarin, phenytoin, testosterone, halothane, zidovudine... 

Many drugs (e.g., warfarin, propranolol, hexobarbiml, glu-lethimide. cyclophosphamide, ketamine, and ibuprof en) often are administered as racemic mixtures in humans. The two enantiomers present in a racemic mixture may differ in pharmacological activity. Usually, one enantiomer tends to be much more active than the other. For example, the (5)(-) enantiomer of warfarin is S times more potent as an oral anticoagulant than the (/ )(+) enantiomer. In some in-... 

Clinically important, potentially hazardous interactions with allopurinol, chlorambucil, cyclophosphamide, cyclosporine, hemophilus B vaccine, imidapril, mycophenolate, olsalazine, vaccines, warfarin... 

Clinically important, potentially hazardous interactions with amiloride, aminoglycosides, amphotericin B, ampicillin, anisindione, anticoagulants, armodafinil, atorvastatin, azathioprine, azithromycin, bacampicillin, basiliximab, bezafibrate, bosentan, bupropion, carbenicillin, caspofungin, cholestyramine, clarithromycin, cloxacillin, co-trimoxazole, corticosteroids, cyclophosphamide, daclizumab, danazol, dicloxacillin, dicumarol, digoxin, diltiazem, disulfiram, echinacea, erythromycin, ethotoin, etoposide, ezetimibe, flunisolide, fluoxymesterone, fluvastatin, foscarnet, fosphenytoin, gemfibrozil, hemophilus B vaccine, HMG-CoA reductase inhibitors, imatinib, imipenem/cilastatin, influenza vaccines, ketoconazole, lanreotide, lopinavir, lovastatin, mephenytoin, methicillin, methoxsalen, methylphenidate, methylprednisolone, methyltestosterone, mezlocillin, mizolastine, mycophenolate, nafcillin, nisoldipine, NSAIDs, orlistat, oxacillin, penicillins, phellodendron, phenytoin, pravastatin, prednisolone, prednisone, pristinamycin, ranolazine, red rice yeast, rifabutin, rifampin, rifapentine, ritonavir, rosuvastatin, simvastatin, sirolimus, spironolactone, St John s wort, sulfacetamide, sulfadiazine, sulfamethoxazole, sulfisoxazole, sulfonamides, tacrolimus, telithromycin, tenoxicam, testosterone, ticarcillin, tolvaptan, trabectedin, triamterene, troleandomycin, ursodeoxycholic acid, vaccines, vecuronium, warfarin, zofenopril... 

Arachidonic acid, benzo[a]pyrene, carbamazepine, clozapine, cyclophosphamide, S) and (R)-ibuprofen, omeprazole, paclitaxel, progesterone, retinoic acid, sulfadiazine, temazepam, testosterone, tienilic acid, trimethoprim, (J2)-warfarin, zidovudine Sulfafenazole Rifampicin... 

Amitriptyline, barbiturates, chlorproguanil, citalopram, clomipramine, clozapine, cyclophosphamide, diazepam, hexobarbital, imipramine, pentamidine, phenobarbital, phenytoin, propranolol, quinine, (S)- and (Jf)-warfarin, zidovudine... 

Acetaminophen, aldrin, alfentanil, amiodarone, aminopyrine, amitriptyline, amprenavir, androstenedione,antipyrine, astemizole, benzphetamine, budesonide, carbamazepine, celecoxib, chlorpromazine, chlorzoxazone, cisapride, clarithromycin, clozapine, cocaine, codeine, cortisol, cyclophosphamide,cyclosporin, dapsone, delavirdine, dextromethorphan, digitoxin, diltiazem, diazepam, erythromycin, 17j3-estradiol, ethinylestradiol, etoposide, felbamate, fentanyl, flutamide, hydroxyarginine, ifosphamide, imipramine, indinavir, ketoconazole, lansoprazole, loratidine, losartan, lovastatin, (iS)"mephen3d in, methadone, mianserin, miconazole, mifepristone, nelfinavir, nevirapine, nicardipine, nifedipine, odansetron, omeprazole, orphenadrine, proguanil, propafenone, quinidine, quinine, rapamycin, retinoic acid, ritonavir, saquinavir, selegiline, serindole, sufentanil, sulfinpyrazone, tacrolimus, tamoxifen, tamsulosin, taxol, teniposide, terfenadine, tetrahydrocannabinol, theophylline, toremifene, triazolam, trimethadone, trimethoprim, troleandomycin, verapamil, warfarin, zatosetron, Zolpidem, zonisamide... 

ANTICANCER AND IMMUNO-MODULATING DRUGS - cyclophosphamide 4. ANTICOAGULANTS-warfarin 5. ANTIDEPRESSANTS-moclobemide 6. ANTIEPILEPTICS-phenobarbitone, primidone... 

Other cases of overanticoagulation have been reported with warfarin and fluorouracil-based regimens including CMF (cyclophosphamide, methotrexate and fluorouracil), - CMF plus vincristine and prednisone, fluorouracil, cisplatin and etoposide, and fluorouracil, cispla-tin and mitomycin."... 

A number of case reports describe an increase in the effects of warfarin, accompanied by bleeding in some cases, caused by an-tineoplastic regimens containing carboplatin, chlormethine, cyclophosphamide, doxorubicin, etoposide, gefitinib, gemcitabine, ifosfamide with mesna, methotrexate, procarbazine, trastuzum-ab, vincristine or vindesine. A decrease in the effects of warfarin has been seen with azathioprine, cyclophosphamide, mercaptop-urine and mitotane, a decrease in the effects of acenocoumarol has been seen with mercaptopurine, and a decrease in the effects of phenprocoumon have l n seen with azathioprine. 

A woman taking warfarin had a marked rise in her prothrombin time when her treatment with cyclophosphamide was withdrawn. ... 

A man well stabilised on warfarin had a marked reduction in his anticoagulant response on two occasions while taking mercaptopurine, but no changes occurred when he took busulfan, cyclophosphamide, cytarab-ine, hydroxycarbamide, mitobronitol, demecolcine or melphalan. A woman needed a marked increase in her dosage of acenocoumarol, from 21 to 70 mg weekly, when she was given mercaptopurine 100 mg daily. Another patient required about a 25% increase in warfarin dose while taking mercaptopurine 1(X) mg daily. 

The prothrombin times of an elderly man given warfarin increased by 50 to 100% in the middle of three cycles of treatment with ProMace-Mopp (cyclophosphamide, doxombicin, etoposide, chlormethine, vincristine, procarbazine, methotrexate and prednisone), and he developed a subconjunctival haemorrhage during the first cycle. ... 

Etretinate. A man with T-cell lymphoma who had recently been given chemotherapy (cyclophosphamide, doxorubicin, vincristine and prednisolone) was anticoagulated with warfarin after developing a pulmonary embolism. About three weeks later, he started etretinate 40 mg daily and it was found necessary to increase his warfarin dosage from 7 to 10 mg daily. His liver function tests were normal. This patient had also recently started taking co-proxamol , (p.436), tolbutamide , (p.380) and cimeti-dine , (p.412) , but all of these have been reported to only rarely increase the effect of warfarin. 

Noninterfering amitriptyline, carbamazepine, carmustine, chlorpromazine, cimeti-dine, cisplatin, cyclophosphamide, dexamethasone, diazepam, digoxin, etoposide, furo-semide, haloperidol, ibuprofen, imipramine, indomethacin, methotrexate, phenobarbi-tal, phen3doin, propranolol, ranitidine, theophylline, triazolam, warfarin... 

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