Drug interactions
Lidocaine + Peginterferon alfa 2a
Severity: Moderate
Lidocaine and Peginterferon alfa 2a: moderate interaction.
Last updated
For healthcare professionals — reference only. This page is a brief summary, not medical advice and not a substitute for official labeling or clinical judgement. Always verify before prescribing or dispensing.
Summary
Peginterferon alfa-2a inhibits CYP1A2, which contributes to lidocaine metabolism, so systemic lidocaine levels may rise. This could increase the risk of CNS effects and cardiac toxicity with systemic or repeated dosing.
What this interaction means in plain words
Lidocaine and Peginterferon alfa 2a can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken.
Lidocaine belongs to Cardiovascular; Peginterferon alfa 2a belongs to Anti Virals.
Why it happens
Inhibition of CYP1A2-mediated lidocaine metabolism by peginterferon alfa-2a.
What to do
With systemic or repeated lidocaine dosing, monitor for dizziness, tremor, arrhythmia and consider dose reduction. Single local anesthetic doses rarely need adjustment.
What to ask your pharmacist
- Should I take them at different times of day?
- Does the dose of either medicine need to change?
- Is there anything I should avoid, such as alcohol or certain foods, while on both?
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Other interactions of Peginterferon alfa 2a
Other interactions of Lidocaine
- Bupivacaine liposome + Lidocaine Major
- Disopyramide + Lidocaine Major
- Ex vivo expanded autologous human corneal epithelial cells containing stem cells + Lidocaine Major
- Lidocaine + Nirmatrelvir / ritonavir Major
- Lidocaine + Ombitasvir / paritaprevir / ritonavir and dasabuvir Major
- Lidocaine + Pimozide Major
Frequently asked questions
Can I take Lidocaine with Peginterferon alfa 2a?
MediHelp rates the interaction as moderate. Lidocaine and Peginterferon alfa 2a can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken. Peginterferon alfa-2a inhibits CYP1A2, which contributes to lidocaine metabolism, so systemic lidocaine levels may rise. This could increase the risk of CNS effects and cardiac toxicity with systemic or repeated dosing.
How serious is the interaction between Lidocaine and Peginterferon alfa 2a?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: With systemic or repeated lidocaine dosing, monitor for dizziness, tremor, arrhythmia and consider dose reduction. Single local anesthetic doses rarely need adjustment.
What other medicines interact with Peginterferon alfa 2a?
MediHelp also lists interactions of Peginterferon alfa 2a with, for example, Clozapine, Deferiprone, Hydroxyurea. The full list is on the Peginterferon alfa 2a page.
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