Interactions médicamenteuses
Cobicistat + Tolterodine
Gravité: Majeure
Cobicistat and Tolterodine: major interaction.
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Résumé
Cobicistat is a strong CYP3A inhibitor and raises tolterodine concentrations, especially in CYP2D6 poor metabolizers. This increases anticholinergic adverse effects and QT risk.
Ce que signifie cette interaction, en termes simples
Cobicistat and Tolterodine can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for.
Cobicistat belongs to Miscellaneous; Tolterodine belongs to Genitourinary.
Pourquoi elle survient
Strong CYP3A4 inhibition by cobicistat (plus some CYP2D6 inhibition) reduces tolterodine metabolism.
Conduite à tenir
Reduce the tolterodine dose to a maximum of 2 mg daily (1 mg twice daily for immediate-release) and monitor for anticholinergic effects and QT prolongation.
Questions à poser à votre pharmacien
- Does the benefit of taking both outweigh the risk in my case?
- Do I need any blood test, ECG or other check while on both?
- What early warning signs should I watch for, and what should I do if they appear?
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Autres interactions de Tolterodine
Autres interactions de Cobicistat
- Alfuzosin + Cobicistat Contre-indiquée
- Apalutamide + Cobicistat Contre-indiquée
- Cobicistat + Colchicine Contre-indiquée
- Cobicistat + Dronedarone Contre-indiquée
- Cobicistat + Eletriptan Contre-indiquée
- Cobicistat + Eplerenone Contre-indiquée
Questions fréquentes
Can I take Cobicistat with Tolterodine?
MediHelp rates the interaction as major. Cobicistat and Tolterodine can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for. Cobicistat is a strong CYP3A inhibitor and raises tolterodine concentrations, especially in CYP2D6 poor metabolizers. This increases anticholinergic adverse effects and QT risk.
How serious is the interaction between Cobicistat and Tolterodine?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Reduce the tolterodine dose to a maximum of 2 mg daily (1 mg twice daily for immediate-release) and monitor for anticholinergic effects and QT prolongation.
What other medicines interact with Tolterodine?
MediHelp also lists interactions of Tolterodine with, for example, Clarithromycin, Clozapine, Dronedarone. The full list is on the Tolterodine page.
Monographies complètes, posologies et vérificateur d'interactions dans l'application MediHelp
Ouvrez le référentiel complet, vérifiez les interactions entre plusieurs médicaments et utilisez les outils de posologie dans l'application MediHelp.
