Drug interactions
Epinephrine + Ranolazine
Severity: Moderate
Epinephrine and Ranolazine: 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
Epinephrine can prolong the QT interval and provoke arrhythmias, especially with hypokalemia, and ranolazine also prolongs QT. In emergencies such as anaphylaxis or cardiac arrest epinephrine should still be used, and the combination matters mostly with repeated or high doses.
What this interaction means in plain words
Epinephrine and Ranolazine 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.
Epinephrine belongs to Endocrine; Ranolazine belongs to Cardiovascular.
Why it happens
Additive QT prolongation, with epinephrine's beta-adrenergic stimulation and hypokalemic effect increasing arrhythmia susceptibility.
What to do
Do not withhold epinephrine in emergencies; use ECG monitoring and keep potassium and magnesium replete when it is given to patients on ranolazine.
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 Ranolazine
- Adagrasib + Ranolazine Contraindicated
- Amobarbital + Ranolazine Contraindicated
- Apalutamide + Ranolazine Contraindicated
- Butabarbital + Ranolazine Contraindicated
- Carbamazepine + Ranolazine Contraindicated
- Clarithromycin + Ranolazine Contraindicated
Other interactions of Epinephrine
- Epinephrine + Isocarboxazid Contraindicated
- Epinephrine + Phenelzine Contraindicated
- Epinephrine + Tranylcypromine Contraindicated
- Acebutolol + Epinephrine Major
- Amitriptyline + Epinephrine Major
- Amoxapine + Epinephrine Major
Frequently asked questions
Can I take Epinephrine with Ranolazine?
MediHelp rates the interaction as moderate. Epinephrine and Ranolazine 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. Epinephrine can prolong the QT interval and provoke arrhythmias, especially with hypokalemia, and ranolazine also prolongs QT. In emergencies such as anaphylaxis or cardiac arrest epinephrine should still be used, and the combination matters mostly with repeated or high doses.
How serious is the interaction between Epinephrine and Ranolazine?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Do not withhold epinephrine in emergencies; use ECG monitoring and keep potassium and magnesium replete when it is given to patients on ranolazine.
What other medicines interact with Ranolazine?
MediHelp also lists interactions of Ranolazine with, for example, Adagrasib, Amobarbital, Apalutamide. The full list is on the Ranolazine page.
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