Drug interactions
Benperidol + Methamphetamine
Severity: Moderate
Benperidol 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
Methamphetamine is a stimulant and benperidol is a potent butyrophenone antipsychotic, so their effects on alertness and psychomotor state oppose one another. Dopamine blockade by benperidol can blunt the psychostimulant and psychotic-symptom-provoking effects of methamphetamine, while the stimulant may mask sedation and worsen psychosis. The net clinical effect is unpredictable.
What this interaction means in plain words
Benperidol 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 pharmacodynamic actions: central dopamine D2 antagonism by benperidol versus amphetamine-induced monoamine release.
What to do
Monitor mental state, agitation, blood pressure, heart rate and ECG when the combination cannot be avoided. Reassess the need for the stimulant in patients with 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 Benperidol with Methamphetamine?
MediHelp rates the interaction as moderate. Benperidol 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. Methamphetamine is a stimulant and benperidol is a potent butyrophenone antipsychotic, so their effects on alertness and psychomotor state oppose one another. Dopamine blockade by benperidol can blunt the psychostimulant and psychotic-symptom-provoking effects of methamphetamine, while the stimulant may mask sedation and worsen psychosis. The net clinical effect is unpredictable.
How serious is the interaction between Benperidol 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: Monitor mental state, agitation, blood pressure, heart rate and ECG when the combination cannot be avoided. Reassess the need for the stimulant in patients with 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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