Interação entre Alopurinol e Mercaptopurina
Alopurinol e Mercaptopurina: ambas as bulas profissionais descrevem uma interação que geralmente exige monitoramento, alteração da dose ou espaçamento entre as doses.
Geralmente controlável com monitoramento ou alteração da dose. Informe ao seu farmacêutico que você toma os dois.
O que dizem as bulas da FDA
Da bula de Alopurinol (Allopurinol) · em vigor desde 2026-05-21
Concomitant use with allopurinol increases the exposure of either mercaptopurine or azathioprine which may increase the risk of myelosuppression.
Reduce the dosage of mercaptopurine or azathioprine as recommended in their respective prescribing information when used concomitantly with allopurinol tablets [ see Drug Interactions (7.2) ].
Mercaptopurine or Azathioprine: Reduce mercaptopurine or azathioprine dose as recommended in the respective prescribing information.
Concomitant use of allopurinol increases the exposure of either mercaptopurine or azathioprine which may increase the risk of their adverse reactions, including myelosuppression [ see Warnings and Precautions 5.5 ].
Intervention In patients receiving mercaptopurine or azathioprine, the concomitant administration of 300 mg to 600 mg of allopurinol per day will require a reduction in dose to approximately one third to one fourth of the usual dose of mercaptopurine or azathioprine.
Da bula de Mercaptopurina (Mercaptopurine) · em vigor desde 2026-01-30
Reduce the dose of mercaptopurine tablets when coadministered with allopurinol [see Dosage and Administration (2.4)] .
Allopurinol : Reduce the dose of mercaptopurine tablets when co-administered with allopurinol.
Allopurinol Allopurinol can inhibit the first-pass oxidative metabolism of mercaptopurine by xanthine oxidase, which can lead to an increased risk of mercaptopurine adverse reactions (i.e., myelosuppression, nausea, and vomiting) [see Warnings and Precautions (5.1), Adverse Reactions (6.1)] .
Myelosuppression can be exacerbated by coadministration with allopurinol, aminosalicylates or other products that cause myelosuppression [see Drug Interactions (7.1, 7.3, 7.4)].
Toma mais do que estes dois? As interações se acumulam. Verifique sua lista inteira de uma vez; ela fica no seu navegador.
Abrir no verificadorNão é aconselhamento médico. Interaction Checker cita o texto das bulas da FDA e fichas informativas do NIH. A importância de uma interação para você depende das doses, dos horários, da função renal e hepática e de outras condições de saúde. Confirme com um farmacêutico ou com o prescritor.