Drug interactions
Fluphenazine + Loxapine inhaled
Severity: Moderate
Fluphenazine and Loxapine inhaled: 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 dopamine-blocking antipsychotics, so combining them increases the risk of extrapyramidal symptoms, sedation and, rarely, neuroleptic malignant syndrome. Inhaled loxapine may also cause bronchospasm, which is a separate concern in patients with airway disease.
What this interaction means in plain words
Fluphenazine and Loxapine inhaled 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 dopamine D2 receptor antagonism and sedative effects.
What to do
Monitor for extrapyramidal symptoms, excessive sedation, hyperthermia and rigidity after loxapine dosing. Avoid repeated dosing if the patient is heavily sedated.
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 Fluphenazine
- Arsenic trioxide + Fluphenazine Contraindicated
- Dofetilide + Fluphenazine Contraindicated
- Fluphenazine + Ibutilide Contraindicated
- Fluphenazine + Pimozide Contraindicated
- Adagrasib + Fluphenazine Major
- Alfentanil + Fluphenazine Major
Frequently asked questions
Can I take Fluphenazine with Loxapine inhaled?
MediHelp rates the interaction as moderate. Fluphenazine and Loxapine inhaled 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 dopamine-blocking antipsychotics, so combining them increases the risk of extrapyramidal symptoms, sedation and, rarely, neuroleptic malignant syndrome. Inhaled loxapine may also cause bronchospasm, which is a separate concern in patients with airway disease.
How serious is the interaction between Fluphenazine and Loxapine inhaled?
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 extrapyramidal symptoms, excessive sedation, hyperthermia and rigidity after loxapine dosing. Avoid repeated dosing if the patient is heavily sedated.
What other medicines interact with Fluphenazine?
MediHelp also lists interactions of Fluphenazine with, for example, Arsenic trioxide, Dofetilide, Ibutilide. The full list is on the Fluphenazine page.
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