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Interações medicamentosas

Mefloquine + Quinine

Gravidade: Contraindicada

Mefloquine and Quinine: contraindicated interaction.

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Para profissionais de saúde — apenas referência. Esta página é um resumo breve, não é aconselhamento médico nem substitui a bula oficial ou o julgamento clínico. Verifique sempre antes de prescrever ou dispensar.

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Resumo

Both agents prolong the QT interval and mefloquine can also cause conduction abnormalities and seizures. Given together, or soon after one another, they raise the risk of serious arrhythmias and cardiac arrest.

O que esta interação significa em palavras simples

Mefloquine and Quinine are not normally used together. Taking them at the same time is expected to cause harm or make one of them unsafe, so a different medicine is usually chosen for one of the two.

Mefloquine belongs to Anti Parasitic; Quinine belongs to Anti Parasitic.

Nível de evidência: Moderate

Por que acontece

Additive QT prolongation and cardiac conduction effects (pharmacodynamic synergism).

O que fazer

Avoid concurrent use; do not give mefloquine within about 12 hours after quinine. If quinine is required for severe malaria, use ECG monitoring and avoid mefloquine prophylaxis or treatment.

O que perguntar ao farmacêutico

  • Is there an alternative to one of these two medicines for me?
  • If both are essential, who is monitoring me and how often?
  • Which symptoms mean I should stop and seek help straight away?

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Perguntas frequentes

Can I take Mefloquine with Quinine?

MediHelp rates the interaction as contraindicated. Mefloquine and Quinine are not normally used together. Taking them at the same time is expected to cause harm or make one of them unsafe, so a different medicine is usually chosen for one of the two. Both agents prolong the QT interval and mefloquine can also cause conduction abnormalities and seizures. Given together, or soon after one another, they raise the risk of serious arrhythmias and cardiac arrest.

How serious is the interaction between Mefloquine and Quinine?

MediHelp rates it contraindicated, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Avoid concurrent use; do not give mefloquine within about 12 hours after quinine. If quinine is required for severe malaria, use ECG monitoring and avoid mefloquine prophylaxis or treatment.

What other medicines interact with Quinine?

MediHelp also lists interactions of Quinine with, for example, Arsenic trioxide, Dofetilide, Dronedarone. The full list is on the Quinine page.

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