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Interactions médicamenteuses

Amyl nitrite + Sildenafil

Gravité: Contre-indiquée

Amyl nitrite and Sildenafil: contraindicated interaction.

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Résumé

Nitrates increase cGMP via nitric oxide and sildenafil blocks its breakdown, causing profound vasodilation. This can lead to severe, potentially fatal hypotension.

Ce que signifie cette interaction, en termes simples

Amyl nitrite and Sildenafil 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.

Niveau de preuve: High

Pourquoi elle survient

Additive cGMP-mediated vasodilation from nitric oxide donation and PDE5 inhibition.

Conduite à tenir

Do not use together. Nitrates should be avoided for at least 24 hours after sildenafil.

Questions à poser à votre pharmacien

  • 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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Questions fréquentes

Can I take Amyl nitrite with Sildenafil?

MediHelp rates the interaction as contraindicated. Amyl nitrite and Sildenafil 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. Nitrates increase cGMP via nitric oxide and sildenafil blocks its breakdown, causing profound vasodilation. This can lead to severe, potentially fatal hypotension.

How serious is the interaction between Amyl nitrite and Sildenafil?

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. Nitrates should be avoided for at least 24 hours after sildenafil.

What other medicines interact with Sildenafil?

MediHelp also lists interactions of Sildenafil with, for example, Atazanavir, Cobicistat, Elvitegravir / cobicistat / emtricitabine / tenofovir df. The full list is on the Sildenafil page.

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