1991
DOI: 10.1016/0140-6736(91)90244-j
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Warfarin antagonism by avocado

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Cited by 30 publications
(13 citation statements)
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“…Some of the most interesting interactions involve the intake of foods or other materials that contain varying amounts of vitamin K. Repeated ingestion of vitamin K-rich vegetables may decrease the effectiveness of warfarin therapy (Blickstein et al 1991;Karlson et al 1986;Qureshi et al 1981), and ingestion of vitamin K itself (phytomenadione; vitamin Kl) may alter the requirements of warfarin to attain a particular PT. Administration of enteral nutrition has been noted to cause variations in the PT of patients receiving concomitant coumarin (Lader et al 1980;Lutomski et al 1987;Parr et al 1982;Zallman et al 1981).…”
Section: Drug Antagonismmentioning
confidence: 99%
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“…Some of the most interesting interactions involve the intake of foods or other materials that contain varying amounts of vitamin K. Repeated ingestion of vitamin K-rich vegetables may decrease the effectiveness of warfarin therapy (Blickstein et al 1991;Karlson et al 1986;Qureshi et al 1981), and ingestion of vitamin K itself (phytomenadione; vitamin Kl) may alter the requirements of warfarin to attain a particular PT. Administration of enteral nutrition has been noted to cause variations in the PT of patients receiving concomitant coumarin (Lader et al 1980;Lutomski et al 1987;Parr et al 1982;Zallman et al 1981).…”
Section: Drug Antagonismmentioning
confidence: 99%
“…Certain foods that are high in the fat soluble vitamins, e.g. avocado (Blickstein et al 1991), may induce metabolising enzymes. Chronic consumption of alcohol (ethanol) has similarly been implicated.…”
Section: Miscellaneousmentioning
confidence: 99%
“…Avocado pears 263 and ice cream 264 have been reported to cause antagonism of warfarin, perhaps due to interference with absorption. Foods high in vitamin K content or those foods capable of enhancing intestinal sources of vitamin K may antagonise the anticoagulant effect of warfarin 265,266 .…”
Section: Drug-food Interactionsmentioning
confidence: 99%
“…Японские специалисты сообщают о слу-чае резкого снижения антикоагулянтного эффекта варфарина после употребления пациентом в пищу хлореллы -продукта, богатого витамином К 1 [21]. Есть сообщения и о выраженном влиянии на терапию варфарином употребления авокадо [6] и брокколи [19]. В отечественных публикациях также приводятся наблюдения, свидетельствующие, что при назначе-нии АНД для профилактики или лечения тромбоэм-болических осложнений лечащий врач обязан обра-щать внимание на особенности пищевого рациона больного.…”
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