Drug interactions
Benzphetamine + Haloperidol
Severity: Moderate
Benzphetamine and Haloperidol: 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
Benzphetamine is a sympathomimetic anorectic whose stimulant effects oppose haloperidol's sedation, and the pharmacologic actions work against each other. Antipsychotics may also reduce the anorectic effect, and stimulants may worsen psychotic symptoms.
What this interaction means in plain words
Benzphetamine and Haloperidol 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 antagonism between dopaminergic stimulation and dopamine receptor blockade.
What to do
Monitor psychiatric symptoms and efficacy of both agents. Prefer an alternative weight-loss strategy in patients with psychotic disorders.
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 Haloperidol
- Dofetilide + Haloperidol Contraindicated
- Dronedarone + Haloperidol Contraindicated
- Haloperidol + Ibutilide Contraindicated
- Haloperidol + Levoketoconazole Contraindicated
- Haloperidol + Panobinostat Contraindicated
- Haloperidol + Pimozide Contraindicated
Frequently asked questions
Can I take Benzphetamine with Haloperidol?
MediHelp rates the interaction as moderate. Benzphetamine and Haloperidol 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. Benzphetamine is a sympathomimetic anorectic whose stimulant effects oppose haloperidol's sedation, and the pharmacologic actions work against each other. Antipsychotics may also reduce the anorectic effect, and stimulants may worsen psychotic symptoms.
How serious is the interaction between Benzphetamine and Haloperidol?
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 symptoms and efficacy of both agents. Prefer an alternative weight-loss strategy in patients with psychotic disorders.
What other medicines interact with Haloperidol?
MediHelp also lists interactions of Haloperidol with, for example, Dofetilide, Dronedarone, Ibutilide. The full list is on the Haloperidol page.
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