Drug interactions
Epinephrine + Fluoxetine
Severity: Minor
Epinephrine and Fluoxetine: 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
Both drugs can affect cardiac repolarization and heart rhythm, and epinephrine can provoke tachyarrhythmias. In practice, risk is mainly relevant with repeated or systemic epinephrine dosing in patients with other QT risk factors.
What this interaction means in plain words
Epinephrine and Fluoxetine have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Epinephrine belongs to Endocrine; Fluoxetine belongs to Central Nervous System.
Why it happens
Additive pharmacodynamic effects on QT interval and cardiac excitability.
What to do
For systemic epinephrine use, monitor ECG and correct potassium and magnesium; no change is needed for typical emergency anaphylaxis dosing.
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 Fluoxetine
- Fluoxetine + Isocarboxazid Contraindicated
- Fluoxetine + Mavacamten Contraindicated
- Fluoxetine + Methylene blue Contraindicated
- Fluoxetine + Phenelzine Contraindicated
- Fluoxetine + Pimozide Contraindicated
- Fluoxetine + Rasagiline 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 Fluoxetine?
MediHelp rates the interaction as minor. Epinephrine and Fluoxetine have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Both drugs can affect cardiac repolarization and heart rhythm, and epinephrine can provoke tachyarrhythmias. In practice, risk is mainly relevant with repeated or systemic epinephrine dosing in patients with other QT risk factors.
How serious is the interaction between Epinephrine and Fluoxetine?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: For systemic epinephrine use, monitor ECG and correct potassium and magnesium; no change is needed for typical emergency anaphylaxis dosing.
What other medicines interact with Fluoxetine?
MediHelp also lists interactions of Fluoxetine with, for example, Isocarboxazid, Mavacamten, Methylene blue. The full list is on the Fluoxetine page.
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