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Interações medicamentosas

Amyl nitrite + Tadalafil

Gravidade: Contraindicada

Amyl nitrite and Tadalafil: 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

Amyl nitrite is a rapid, potent vasodilator, and tadalafil greatly enhances its hypotensive effect. Profound hypotension, collapse and cardiac ischemia can result, including with recreational inhaled nitrites.

O que esta interação significa em palavras simples

Amyl nitrite and Tadalafil 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.

Nível de evidência: High

Por que acontece

Nitrite-derived nitric oxide raises cGMP and PDE5 inhibition prevents its degradation, causing excessive additive vasodilation.

O que fazer

Do not use together; allow at least 48 hours after the last tadalafil dose before any nitrate. Advise patients to avoid recreational nitrites entirely.

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 Amyl nitrite with Tadalafil?

MediHelp rates the interaction as contraindicated. Amyl nitrite and Tadalafil 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. Amyl nitrite is a rapid, potent vasodilator, and tadalafil greatly enhances its hypotensive effect. Profound hypotension, collapse and cardiac ischemia can result, including with recreational inhaled nitrites.

How serious is the interaction between Amyl nitrite and Tadalafil?

MediHelp rates it contraindicated, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Do not use together; allow at least 48 hours after the last tadalafil dose before any nitrate. Advise patients to avoid recreational nitrites entirely.

What other medicines interact with Tadalafil?

MediHelp also lists interactions of Tadalafil with, for example, Isosorbide dinitrate, Isosorbide mononitrate, Nitroglycerin po. The full list is on the Tadalafil page.

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