Drug interactions
Loxapine + Milnacipran
Severity: Moderate
Loxapine and Milnacipran: 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
Combining a serotonin-norepinephrine reuptake inhibitor with an antipsychotic can in rare cases lead to serotonin syndrome or neuroleptic malignant syndrome. Loxapine also has some serotonin receptor activity and may add sedation and orthostatic effects.
What this interaction means in plain words
Loxapine and Milnacipran 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 belongs to Central Nervous System; Milnacipran belongs to Central Nervous System.
Why it happens
Additive serotonergic and dopaminergic modulation; the mechanism of the rare syndromes is not fully established.
What to do
Monitor for mental status change, hyperthermia, rigidity, clonus and autonomic instability, particularly at initiation and dose increases. Discontinue the agents and give supportive care if either syndrome is suspected.
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 Milnacipran
- Isocarboxazid + Milnacipran Contraindicated
- Methylene blue + Milnacipran Contraindicated
- Milnacipran + Phenelzine Contraindicated
- Milnacipran + Procarbazine Contraindicated
- Milnacipran + Rasagiline Contraindicated
- Milnacipran + Safinamide Contraindicated
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 Loxapine with Milnacipran?
MediHelp rates the interaction as moderate. Loxapine and Milnacipran 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. Combining a serotonin-norepinephrine reuptake inhibitor with an antipsychotic can in rare cases lead to serotonin syndrome or neuroleptic malignant syndrome. Loxapine also has some serotonin receptor activity and may add sedation and orthostatic effects.
How serious is the interaction between Loxapine and Milnacipran?
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 for mental status change, hyperthermia, rigidity, clonus and autonomic instability, particularly at initiation and dose increases. Discontinue the agents and give supportive care if either syndrome is suspected.
What other medicines interact with Milnacipran?
MediHelp also lists interactions of Milnacipran with, for example, Isocarboxazid, Methylene blue, Phenelzine. The full list is on the Milnacipran page.
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