Drug interactions
Loxapine inhaled + Quetiapine
Severity: Moderate
Loxapine inhaled and Quetiapine: 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
Both are antipsychotics, so combining them adds dopamine blockade, sedation and risk of extrapyramidal symptoms or neuroleptic malignant syndrome. Inhaled loxapine can also cause bronchospasm, and sedation may be additive.
What this interaction means in plain words
Loxapine inhaled and Quetiapine 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
Additive D2 receptor antagonism and sedative effects.
What to do
Monitor for oversedation, extrapyramidal symptoms and signs of neuroleptic malignant syndrome. Observe the patient after inhalation as required by product labeling.
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 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 Loxapine inhaled with Quetiapine?
MediHelp rates the interaction as moderate. Loxapine inhaled and Quetiapine 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. Both are antipsychotics, so combining them adds dopamine blockade, sedation and risk of extrapyramidal symptoms or neuroleptic malignant syndrome. Inhaled loxapine can also cause bronchospasm, and sedation may be additive.
How serious is the interaction between Loxapine inhaled and Quetiapine?
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 for oversedation, extrapyramidal symptoms and signs of neuroleptic malignant syndrome. Observe the patient after inhalation as required by product labeling.
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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