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Interações medicamentosas

Mefloquine + Quinidine

Gravidade: Contraindicada

Mefloquine and Quinidine: 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.

O conteúdo clínico desta página está disponível apenas em inglês.

Resumo

Both agents prolong the QT interval, and mefloquine may cause conduction abnormalities. Together they raise the risk of serious arrhythmias and cardiac arrest.

O que esta interação significa em palavras simples

Mefloquine and Quinidine 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; Quinidine belongs to Anti Parasitic.

Nível de evidência: Moderate

Por que acontece

Additive QT prolongation and conduction effects (pharmacodynamic synergism).

O que fazer

Avoid the combination; use an alternative antimalarial or antiarrhythmic. If unavoidable, use ECG monitoring and correct electrolytes.

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?

Bring a full list of your medicines, including over-the-counter products, supplements and herbal remedies, to every pharmacy visit.

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Perguntas frequentes

Can I take Mefloquine with Quinidine?

MediHelp rates the interaction as contraindicated. Mefloquine and Quinidine 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 may cause conduction abnormalities. Together they raise the risk of serious arrhythmias and cardiac arrest.

How serious is the interaction between Mefloquine and Quinidine?

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 the combination; use an alternative antimalarial or antiarrhythmic. If unavoidable, use ECG monitoring and correct electrolytes.

What other medicines interact with Quinidine?

MediHelp also lists interactions of Quinidine with, for example, Adagrasib, Arsenic trioxide, Artemether / lumefantrine. The full list is on the Quinidine page.

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