Drug interactions
Lisdexamfetamine + Loxapine inhaled
Severity: Moderate
Lisdexamfetamine 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
Inhaled loxapine is a sedating antipsychotic that can cause bronchospasm, and lisdexamfetamine is a stimulant that opposes sedation and acts on dopamine pathways. The combined effect is unpredictable, with possible reduced efficacy of either drug and added cardiovascular effects.
What this interaction means in plain words
Lisdexamfetamine 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
Pharmacodynamic opposition between D2 antagonism and amphetamine-induced dopamine release; the interaction is not well characterized.
What to do
Monitor psychiatric status, blood pressure, heart rate and respiratory symptoms after loxapine dosing. Adjust therapy according to response.
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 Lisdexamfetamine
- Isocarboxazid + Lisdexamfetamine Contraindicated
- Linezolid + Lisdexamfetamine Contraindicated
- Lisdexamfetamine + Phenelzine Contraindicated
- Lisdexamfetamine + Procarbazine Contraindicated
- Lisdexamfetamine + Rasagiline Contraindicated
- Lisdexamfetamine + Safinamide Contraindicated
Frequently asked questions
Can I take Lisdexamfetamine with Loxapine inhaled?
MediHelp rates the interaction as moderate. Lisdexamfetamine 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. Inhaled loxapine is a sedating antipsychotic that can cause bronchospasm, and lisdexamfetamine is a stimulant that opposes sedation and acts on dopamine pathways. The combined effect is unpredictable, with possible reduced efficacy of either drug and added cardiovascular effects.
How serious is the interaction between Lisdexamfetamine 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 psychiatric status, blood pressure, heart rate and respiratory symptoms after loxapine dosing. Adjust therapy according to response.
What other medicines interact with Lisdexamfetamine?
MediHelp also lists interactions of Lisdexamfetamine with, for example, Isocarboxazid, Linezolid, Phenelzine. The full list is on the Lisdexamfetamine page.
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