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Interactions médicamenteuses

Clarithromycin + Venetoclax

Gravité: Contre-indiquée

Clarithromycin and Venetoclax: contraindicated interaction.

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Résumé

Clarithromycin increases venetoclax exposure through CYP3A4 and P-glycoprotein inhibition. During initiation and dose ramp-up this increases the risk of tumor lysis syndrome and neutropenia. After ramp-up, strong inhibitors require a major venetoclax dose reduction.

Ce que signifie cette interaction, en termes simples

Clarithromycin and Venetoclax 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.

Clarithromycin belongs to Anti Bacterial; Venetoclax belongs to Miscellaneous.

Niveau de preuve: High

Pourquoi elle survient

Inhibition of CYP3A4 and P-glycoprotein reduces venetoclax clearance and increases absorption.

Conduite à tenir

Do not use during venetoclax initiation or ramp-up; use an alternative antibiotic. After ramp-up, if unavoidable, reduce the venetoclax dose by at least 75% and monitor for toxicity and blood counts.

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 Clarithromycin with Venetoclax?

MediHelp rates the interaction as contraindicated. Clarithromycin and Venetoclax 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. Clarithromycin increases venetoclax exposure through CYP3A4 and P-glycoprotein inhibition. During initiation and dose ramp-up this increases the risk of tumor lysis syndrome and neutropenia. After ramp-up, strong inhibitors require a major venetoclax dose reduction.

How serious is the interaction between Clarithromycin and Venetoclax?

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 during venetoclax initiation or ramp-up; use an alternative antibiotic. After ramp-up, if unavoidable, reduce the venetoclax dose by at least 75% and monitor for toxicity and blood counts.

What other medicines interact with Clarithromycin?

MediHelp also lists interactions of Clarithromycin with, for example, Astemizole, Avanafil, Cisapride. The full list is on the Clarithromycin page.

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