Drug interactions
Imipramine + Lorcaserin
Severity: Major
Imipramine and Lorcaserin: 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
Lorcaserin is a serotonin 5-HT2C agonist, and combination with a serotonergic tricyclic may precipitate serotonin syndrome. Symptoms include confusion, clonus, hyperthermia and autonomic instability.
What this interaction means in plain words
Imipramine and Lorcaserin 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.
Why it happens
Additive serotonergic activity (pharmacodynamic); imipramine inhibits serotonin reuptake and lorcaserin directly stimulates serotonin receptors.
What to do
Avoid the combination where possible. If coadministered, monitor closely for serotonin toxicity and stop lorcaserin if symptoms appear.
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 Imipramine
- Dronedarone + Imipramine Contraindicated
- Imipramine + Isocarboxazid Contraindicated
- Imipramine + Phenelzine Contraindicated
- Imipramine + Pimozide Contraindicated
- Imipramine + Rasagiline Contraindicated
- Imipramine + Safinamide Contraindicated
Frequently asked questions
Can I take Imipramine with Lorcaserin?
MediHelp rates the interaction as major. Imipramine and Lorcaserin 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. Lorcaserin is a serotonin 5-HT2C agonist, and combination with a serotonergic tricyclic may precipitate serotonin syndrome. Symptoms include confusion, clonus, hyperthermia and autonomic instability.
How serious is the interaction between Imipramine and Lorcaserin?
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. If coadministered, monitor closely for serotonin toxicity and stop lorcaserin if symptoms appear.
What other medicines interact with Imipramine?
MediHelp also lists interactions of Imipramine with, for example, Dronedarone, Isocarboxazid, Phenelzine. The full list is on the Imipramine page.
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