Drug interactions
Elagolix + Quinidine
Severity: Moderate
Elagolix and Quinidine: 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
Elagolix is a weak to moderate CYP3A4 inducer, which may reduce quinidine concentrations, and it also inhibits P-gp, which could increase them. The net effect is unpredictable, with a risk of either reduced antiarrhythmic effect or toxicity.
What this interaction means in plain words
Elagolix and Quinidine 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.
Elagolix belongs to Musculoskeletal; Quinidine belongs to Anti Parasitic.
Why it happens
Elagolix induces CYP3A4 and inhibits P-gp, with opposing effects on quinidine exposure.
What to do
Monitor quinidine levels and ECG when starting or stopping elagolix, and adjust the quinidine dose.
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?
Pro+ members
Unlock the full page
Create an account and start a Pro+ trial to unlock the full management advice for Elagolix and Quinidine, the additional notes, the evidence detail and the whole-prescription interaction checker.
- Full clinical management advice
- Additional notes
- Evidence detail
- Interaction checker for a whole prescription
Try Pro+ free for 14 days on the web. No card needed.
Other interactions of Quinidine
- Adagrasib + Quinidine Contraindicated
- Arsenic trioxide + Quinidine Contraindicated
- Artemether / lumefantrine + Quinidine Contraindicated
- Chloroquine + Quinidine Contraindicated
- Dofetilide + Quinidine Contraindicated
- Dronedarone + Quinidine Contraindicated
Other interactions of Elagolix
- Cyclosporin + Elagolix Contraindicated
- Elagolix + Gemfibrozil Contraindicated
- Desogestrel-ethinyl estradiol + Elagolix Major
- Elagolix + Erythromycin Major
- Elagolix + Ethinyl estradiol-drospirenone Major
- Elagolix + Ethinyl estradiol-levonorgestrel Major
Frequently asked questions
Can I take Elagolix with Quinidine?
MediHelp rates the interaction as moderate. Elagolix and Quinidine 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. Elagolix is a weak to moderate CYP3A4 inducer, which may reduce quinidine concentrations, and it also inhibits P-gp, which could increase them. The net effect is unpredictable, with a risk of either reduced antiarrhythmic effect or toxicity.
How serious is the interaction between Elagolix and Quinidine?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor quinidine levels and ECG when starting or stopping elagolix, and adjust the quinidine dose.
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.
Full monographs, dosing and an interaction checker in the MediHelp app
Open the complete reference, check multi-drug interactions and use dosing tools in the MediHelp app.
