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Interactions médicamenteuses

Darunavir + Fluticasone-salmeterol

Gravité: Contre-indiquée

Darunavir and Fluticasone-salmeterol: contraindicated interaction.

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Résumé

Darunavir, usually given with ritonavir or cobicistat, strongly inhibits CYP3A4 and markedly raises salmeterol exposure. This can cause QT prolongation, palpitations and arrhythmias. It also raises systemic fluticasone levels, with a risk of Cushing's syndrome and adrenal suppression.

Ce que signifie cette interaction, en termes simples

Darunavir and Fluticasone-salmeterol 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.

Darunavir belongs to Anti Virals; Fluticasone-salmeterol belongs to Respiratory.

Niveau de preuve: High

Pourquoi elle survient

Strong CYP3A4 inhibition by the boosted protease inhibitor reduces salmeterol and fluticasone clearance.

Conduite à tenir

Avoid the combination and use a non-CYP3A4-dependent alternative such as a different LABA or ICS (e.g., beclomethasone). If unavoidable, monitor ECG, potassium and adrenal function.

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 Darunavir with Fluticasone-salmeterol?

MediHelp rates the interaction as contraindicated. Darunavir and Fluticasone-salmeterol 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. Darunavir, usually given with ritonavir or cobicistat, strongly inhibits CYP3A4 and markedly raises salmeterol exposure. This can cause QT prolongation, palpitations and arrhythmias. It also raises systemic fluticasone levels, with a risk of Cushing's syndrome and adrenal suppression.

How serious is the interaction between Darunavir and Fluticasone-salmeterol?

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 and use a non-CYP3A4-dependent alternative such as a different LABA or ICS (e.g., beclomethasone). If unavoidable, monitor ECG, potassium and adrenal function.

What other medicines interact with Fluticasone-salmeterol?

MediHelp also lists interactions of Fluticasone-salmeterol with, for example, Elvitegravir / cobicistat / emtricitabine / tenofovir df, Fosamprenavir, Indinavir. The full list is on the Fluticasone-salmeterol page.

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