Interações medicamentosas
Clarithromycin + Valbenazine
Gravidade: Grave
Clarithromycin and Valbenazine: major interaction.
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Resumo
Clarithromycin raises exposure to valbenazine and its active metabolite via CYP3A4 inhibition, and both drugs can prolong the QT interval. This increases the risk of somnolence and QT-related arrhythmia.
O que esta interação significa em palavras simples
Clarithromycin and Valbenazine 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.
Clarithromycin belongs to Anti Bacterial; Valbenazine belongs to Central Nervous System.
Por que acontece
CYP3A4 inhibition increases valbenazine levels, with additive QT prolongation.
O que fazer
Reduce valbenazine to 40 mg daily during clarithromycin therapy, or use a non-interacting antibiotic. Monitor ECG and electrolytes in patients at risk of QT prolongation.
O que perguntar ao farmacêutico
- 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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Outras interações de Clarithromycin
- Astemizole + Clarithromycin Contraindicada
- Avanafil + Clarithromycin Contraindicada
- Cisapride + Clarithromycin Contraindicada
- Clarithromycin + Colchicine Contraindicada
- Clarithromycin + Conivaptan Contraindicada
- Clarithromycin + Dihydroergotamine Contraindicada
Outras interações de Valbenazine
- Deutetrabenazine + Valbenazine Contraindicada
- Tranylcypromine + Valbenazine Contraindicada
- Amiodarone + Valbenazine Grave
- Amisulpride + Valbenazine Grave
- Apalutamide + Valbenazine Grave
- Carbamazepine + Valbenazine Grave
Perguntas frequentes
Can I take Clarithromycin with Valbenazine?
MediHelp rates the interaction as major. Clarithromycin and Valbenazine 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. Clarithromycin raises exposure to valbenazine and its active metabolite via CYP3A4 inhibition, and both drugs can prolong the QT interval. This increases the risk of somnolence and QT-related arrhythmia.
How serious is the interaction between Clarithromycin and Valbenazine?
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 valbenazine to 40 mg daily during clarithromycin therapy, or use a non-interacting antibiotic. Monitor ECG and electrolytes in patients at risk of QT prolongation.
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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