Drug interactions
Loxapine inhaled + Methamphetamine
Severity: Moderate
Loxapine inhaled and Methamphetamine: 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
Loxapine is a sedating antipsychotic that can also cause bronchospasm when inhaled, and methamphetamine is a stimulant that may worsen psychosis and agitation. The two have opposing effects on arousal and may undermine each other, with the stimulant masking sedation.
What this interaction means in plain words
Loxapine inhaled and Methamphetamine 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
Opposing dopaminergic and CNS pharmacodynamic effects (D2 blockade versus dopamine release).
What to do
Observe the patient after loxapine inhalation for agitation, psychosis and respiratory symptoms. Reconsider stimulant use in acute psychosis.
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 Methamphetamine
- Isocarboxazid + Methamphetamine Contraindicated
- Linezolid + Methamphetamine Contraindicated
- Methamphetamine + Phenelzine Contraindicated
- Methamphetamine + Procarbazine Contraindicated
- Methamphetamine + Rasagiline Contraindicated
- Methamphetamine + Safinamide Contraindicated
Frequently asked questions
Can I take Loxapine inhaled with Methamphetamine?
MediHelp rates the interaction as moderate. Loxapine inhaled and Methamphetamine 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. Loxapine is a sedating antipsychotic that can also cause bronchospasm when inhaled, and methamphetamine is a stimulant that may worsen psychosis and agitation. The two have opposing effects on arousal and may undermine each other, with the stimulant masking sedation.
How serious is the interaction between Loxapine inhaled and Methamphetamine?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Observe the patient after loxapine inhalation for agitation, psychosis and respiratory symptoms. Reconsider stimulant use in acute psychosis.
What other medicines interact with Methamphetamine?
MediHelp also lists interactions of Methamphetamine with, for example, Isocarboxazid, Linezolid, Phenelzine. The full list is on the Methamphetamine page.
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