Drug interactions
L-tryptophan + Tramadol
Severity: Moderate
L-tryptophan and Tramadol: 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 tramadol inhibits serotonin reuptake, so together they may raise the risk of serotonin syndrome. Cases are mainly theoretical or sporadic.
What this interaction means in plain words
L-tryptophan and Tramadol 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
Monitor for agitation, tremor, hyperreflexia, diaphoresis and hyperthermia, especially after dose increases. Stop one agent if serotonin toxicity 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?
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Other interactions of Tramadol
- Isocarboxazid + Tramadol Contraindicated
- Olanzapine / samidorphan + Tramadol Contraindicated
- Phenelzine + Tramadol Contraindicated
- Procarbazine + Tramadol Contraindicated
- Rasagiline + Tramadol Contraindicated
- Safinamide + Tramadol Contraindicated
Frequently asked questions
Can I take L-tryptophan with Tramadol?
MediHelp rates the interaction as moderate. L-tryptophan and Tramadol 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 tramadol inhibits serotonin reuptake, so together they may raise the risk of serotonin syndrome. Cases are mainly theoretical or sporadic.
How serious is the interaction between L-tryptophan and Tramadol?
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 agitation, tremor, hyperreflexia, diaphoresis and hyperthermia, especially after dose increases. Stop one agent if serotonin toxicity develops.
What other medicines interact with Tramadol?
MediHelp also lists interactions of Tramadol with, for example, Isocarboxazid, Olanzapine / samidorphan, Phenelzine. The full list is on the Tramadol page.
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