Drug interactions
L-tryptophan + Milnacipran
Severity: Moderate
L-tryptophan 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
L-tryptophan is a serotonin precursor and may increase serotonin synthesis. With milnacipran this can contribute to serotonin syndrome.
What this interaction means in plain words
L-tryptophan 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.
Why it happens
Additive serotonergic effects from increased serotonin synthesis and reduced reuptake.
What to do
Avoid high-dose tryptophan supplements. If used, monitor for serotonin syndrome and stop the supplement if symptoms appear.
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
Frequently asked questions
Can I take L-tryptophan with Milnacipran?
MediHelp rates the interaction as moderate. L-tryptophan 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. L-tryptophan is a serotonin precursor and may increase serotonin synthesis. With milnacipran this can contribute to serotonin syndrome.
How serious is the interaction between L-tryptophan 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: Avoid high-dose tryptophan supplements. If used, monitor for serotonin syndrome and stop the supplement if symptoms appear.
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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