Drug interactions
Fenfluramine + Tramadol
Severity: Major
Fenfluramine and Tramadol: major 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
Fenfluramine releases serotonin and tramadol blocks its reuptake, so together they increase the risk of serotonin syndrome. Both can also lower seizure threshold or affect CNS function, and fenfluramine is used in epilepsy, so seizure control may be compromised.
What this interaction means in plain words
Fenfluramine and Tramadol can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for.
Fenfluramine belongs to Central Nervous System; Tramadol belongs to Musculoskeletal.
Why it happens
Additive serotonergic effects through serotonin release and reuptake inhibition.
What to do
Avoid the combination where possible, and use a non-serotonergic analgesic. If used, monitor for serotonin syndrome and seizure control.
What to ask your pharmacist
- Does the benefit of taking both outweigh the risk in my case?
- Do I need any blood test, ECG or other check while on both?
- What early warning signs should I watch for, and what should I do if they appear?
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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
Other interactions of Fenfluramine
- Fenfluramine + Isocarboxazid Contraindicated
- Fenfluramine + Linezolid Contraindicated
- Fenfluramine + Phenelzine Contraindicated
- Fenfluramine + Selegiline Contraindicated
- Fenfluramine + Tranylcypromine Contraindicated
- Almotriptan + Fenfluramine Major
Frequently asked questions
Can I take Fenfluramine with Tramadol?
MediHelp rates the interaction as major. Fenfluramine and Tramadol can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for. Fenfluramine releases serotonin and tramadol blocks its reuptake, so together they increase the risk of serotonin syndrome. Both can also lower seizure threshold or affect CNS function, and fenfluramine is used in epilepsy, so seizure control may be compromised.
How serious is the interaction between Fenfluramine and Tramadol?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Avoid the combination where possible, and use a non-serotonergic analgesic. If used, monitor for serotonin syndrome and seizure control.
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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