Drug interactions
Epinephrine racemic + Loxapine
Severity: Moderate
Epinephrine racemic and Loxapine: 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
Alpha-adrenergic blockade from loxapine can blunt epinephrine's vasoconstriction and leave beta-mediated vasodilation unopposed, causing hypotension and tachycardia. The effect is more relevant with systemic than with inhaled use.
What this interaction means in plain words
Epinephrine racemic and Loxapine 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.
Why it happens
Pharmacodynamic antagonism through alpha-adrenergic receptor blockade.
What to do
Monitor blood pressure and heart rate after systemic epinephrine. Do not withhold epinephrine in anaphylaxis; use a non-epinephrine pressor if hypotension persists.
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 Loxapine
- Alfentanil + Loxapine Major
- Alprazolam + Loxapine Major
- Amisulpride + Loxapine Major
- Amoxapine + Loxapine Major
- Apomorphine + Loxapine Major
- Belladonna and opium + Loxapine Major
Frequently asked questions
Can I take Epinephrine racemic with Loxapine?
MediHelp rates the interaction as moderate. Epinephrine racemic and Loxapine 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. Alpha-adrenergic blockade from loxapine can blunt epinephrine's vasoconstriction and leave beta-mediated vasodilation unopposed, causing hypotension and tachycardia. The effect is more relevant with systemic than with inhaled use.
How serious is the interaction between Epinephrine racemic and Loxapine?
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 blood pressure and heart rate after systemic epinephrine. Do not withhold epinephrine in anaphylaxis; use a non-epinephrine pressor if hypotension persists.
What other medicines interact with Loxapine?
MediHelp also lists interactions of Loxapine with, for example, Alfentanil, Alprazolam, Amisulpride. The full list is on the Loxapine page.
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