Interações medicamentosas
Lidocaine + Nirmatrelvir / ritonavir
Gravidade: Grave
Lidocaine and Nirmatrelvir / ritonavir: major interaction.
Última atualização
Para profissionais de saúde — apenas referência. Esta página é um resumo breve, não é aconselhamento médico nem substitui a bula oficial ou o julgamento clínico. Verifique sempre antes de prescrever ou dispensar.
O conteúdo clínico desta página está disponível apenas em inglês.
Resumo
Ritonavir is a potent CYP3A4 inhibitor and can substantially raise lidocaine exposure, particularly with systemic dosing. This may cause CNS toxicity and arrhythmias, and the product labeling advises caution with antiarrhythmic drugs such as lidocaine.
O que esta interação significa em palavras simples
Lidocaine and Nirmatrelvir / ritonavir 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.
Por que acontece
Ritonavir and nirmatrelvir inhibit CYP3A4, decreasing the hepatic and intestinal metabolism of lidocaine.
O que fazer
Avoid systemic lidocaine if feasible, or use reduced doses with ECG monitoring and lidocaine concentrations where available. Standard local anesthetic doses can usually be used with attention to total dose and toxicity symptoms.
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 Lidocaine
Perguntas frequentes
Can I take Lidocaine with Nirmatrelvir / ritonavir?
MediHelp rates the interaction as major. Lidocaine and Nirmatrelvir / ritonavir 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. Ritonavir is a potent CYP3A4 inhibitor and can substantially raise lidocaine exposure, particularly with systemic dosing. This may cause CNS toxicity and arrhythmias, and the product labeling advises caution with antiarrhythmic drugs such as lidocaine.
How serious is the interaction between Lidocaine and Nirmatrelvir / ritonavir?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Avoid systemic lidocaine if feasible, or use reduced doses with ECG monitoring and lidocaine concentrations where available. Standard local anesthetic doses can usually be used with attention to total dose and toxicity symptoms.
What other medicines interact with Lidocaine?
MediHelp also lists interactions of Lidocaine with, for example, Bupivacaine liposome, Disopyramide, Ex vivo expanded autologous human corneal epithelial cells containing stem cells. The full list is on the Lidocaine page.
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