Drug interactions
Epinephrine racemic + Quetiapine
Severity: Minor
Epinephrine racemic and Quetiapine: 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
Quetiapine's alpha-1 blockade can blunt the pressor effect of epinephrine and allow beta-mediated vasodilation, causing hypotension. Racemic epinephrine used by inhalation has limited systemic exposure, so the interaction is usually minor.
What this interaction means in plain words
Epinephrine racemic and Quetiapine 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
Alpha-adrenergic receptor blockade by quetiapine opposing the adrenergic agonist effects of epinephrine.
What to do
No routine adjustment is needed with inhaled use; monitor blood pressure if systemic doses are given and avoid epinephrine to treat quetiapine-induced hypotension if alternatives exist.
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 Quetiapine
- Adagrasib + Quetiapine Major
- Amiodarone + Quetiapine Major
- Amisulpride + Quetiapine Major
- Amoxapine + Quetiapine Major
- Anagrelide + Quetiapine Major
- Apalutamide + Quetiapine Major
Frequently asked questions
Can I take Epinephrine racemic with Quetiapine?
MediHelp rates the interaction as minor. Epinephrine racemic and Quetiapine have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Quetiapine's alpha-1 blockade can blunt the pressor effect of epinephrine and allow beta-mediated vasodilation, causing hypotension. Racemic epinephrine used by inhalation has limited systemic exposure, so the interaction is usually minor.
How serious is the interaction between Epinephrine racemic and Quetiapine?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: No routine adjustment is needed with inhaled use; monitor blood pressure if systemic doses are given and avoid epinephrine to treat quetiapine-induced hypotension if alternatives exist.
What other medicines interact with Quetiapine?
MediHelp also lists interactions of Quetiapine with, for example, Adagrasib, Amiodarone, Amisulpride. The full list is on the Quetiapine page.
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