Drug interactions
Bupivacaine implant + Quinidine
Severity: Minor
Bupivacaine implant and Quinidine: minor 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
Local anesthetics can cause methemoglobinemia, and quinidine has been rarely linked to it as well. Combined exposure could theoretically add to this risk, although systemic bupivacaine exposure from the implant is low. Quinidine may also add to local anesthetic cardiac depressant effects.
What this interaction means in plain words
Bupivacaine implant and Quinidine have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Why it happens
Additive potential to oxidize hemoglobin to methemoglobin; the mechanism is largely theoretical.
What to do
Be aware of the risk and evaluate for methemoglobinemia (cyanosis, low pulse oximetry, no response to oxygen) if symptoms occur.
What to ask your pharmacist
- Is there anything I should notice while taking both?
- Do I need to tell my doctor at the next visit?
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Other interactions of Quinidine
- Adagrasib + Quinidine Contraindicated
- Arsenic trioxide + Quinidine Contraindicated
- Artemether / lumefantrine + Quinidine Contraindicated
- Chloroquine + Quinidine Contraindicated
- Dofetilide + Quinidine Contraindicated
- Dronedarone + Quinidine Contraindicated
Frequently asked questions
Can I take Bupivacaine implant with Quinidine?
MediHelp rates the interaction as minor. Bupivacaine implant and Quinidine have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Local anesthetics can cause methemoglobinemia, and quinidine has been rarely linked to it as well. Combined exposure could theoretically add to this risk, although systemic bupivacaine exposure from the implant is low. Quinidine may also add to local anesthetic cardiac depressant effects.
How serious is the interaction between Bupivacaine implant and Quinidine?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Be aware of the risk and evaluate for methemoglobinemia (cyanosis, low pulse oximetry, no response to oxygen) if symptoms occur.
What other medicines interact with Quinidine?
MediHelp also lists interactions of Quinidine with, for example, Adagrasib, Arsenic trioxide, Artemether / lumefantrine. The full list is on the Quinidine page.
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