Drug interactions
Dexfenfluramine + Loxapine
Severity: Moderate
Dexfenfluramine and Loxapine: 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
Dexfenfluramine is a serotonergic agent and loxapine also affects serotonin receptors, so additive serotonergic or dopaminergic effects are possible. The net clinical effect is unclear and the drug is no longer marketed because of valvular heart disease and pulmonary hypertension.
What this interaction means in plain words
Dexfenfluramine and Loxapine 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
Possible pharmacodynamic overlap on serotonergic and dopaminergic pathways; mechanism not firmly established.
What to do
Avoid use where possible, given dexfenfluramine's withdrawal for cardiac toxicity. If encountered, monitor for agitation, hyperthermia, tremor, and rigidity.
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 Loxapine
- Alfentanil + Loxapine Major
- Alprazolam + Loxapine Major
- Amisulpride + Loxapine Major
- Amoxapine + Loxapine Major
- Apomorphine + Loxapine Major
- Belladonna and opium + Loxapine Major
Frequently asked questions
Can I take Dexfenfluramine with Loxapine?
MediHelp rates the interaction as moderate. Dexfenfluramine and Loxapine 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. Dexfenfluramine is a serotonergic agent and loxapine also affects serotonin receptors, so additive serotonergic or dopaminergic effects are possible. The net clinical effect is unclear and the drug is no longer marketed because of valvular heart disease and pulmonary hypertension.
How serious is the interaction between Dexfenfluramine and Loxapine?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Avoid use where possible, given dexfenfluramine's withdrawal for cardiac toxicity. If encountered, monitor for agitation, hyperthermia, tremor, and rigidity.
What other medicines interact with Loxapine?
MediHelp also lists interactions of Loxapine with, for example, Alfentanil, Alprazolam, Amisulpride. The full list is on the Loxapine page.
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