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Drug interactions

Lisdexamfetamine + Milnacipran

Severity: Moderate

Lisdexamfetamine 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

Amphetamines increase release of monoamines including serotonin, and milnacipran blocks serotonin and norepinephrine reuptake. Together they can raise the risk of serotonin syndrome and additive cardiovascular stimulation such as hypertension and tachycardia.

What this interaction means in plain words

Lisdexamfetamine 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.

Lisdexamfetamine belongs to Central Nervous System; Milnacipran belongs to Central Nervous System.

Evidence level: Moderate

Why it happens

Additive serotonergic and noradrenergic effects through monoamine release plus reuptake inhibition.

What to do

Start with low doses and titrate slowly, monitoring for agitation, tremor, hyperthermia, clonus and blood pressure or heart rate rises. Stop both agents if serotonin syndrome develops.

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?

Bring a full list of your medicines, including over-the-counter products, supplements and herbal remedies, to every pharmacy visit.

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Frequently asked questions

Can I take Lisdexamfetamine with Milnacipran?

MediHelp rates the interaction as moderate. Lisdexamfetamine 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. Amphetamines increase release of monoamines including serotonin, and milnacipran blocks serotonin and norepinephrine reuptake. Together they can raise the risk of serotonin syndrome and additive cardiovascular stimulation such as hypertension and tachycardia.

How serious is the interaction between Lisdexamfetamine 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: Start with low doses and titrate slowly, monitoring for agitation, tremor, hyperthermia, clonus and blood pressure or heart rate rises. Stop both agents if serotonin syndrome develops.

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.

Full monographs, dosing and an interaction checker in the MediHelp app

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