Drug interactions
Imipramine + Phendimetrazine
Severity: Major
Imipramine and Phendimetrazine: 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
Phendimetrazine is a sympathomimetic anorectic, and tricyclics can alter the pressor response, raising the risk of hypertension, tachycardia and arrhythmia. Both also can lower seizure threshold.
What this interaction means in plain words
Imipramine and Phendimetrazine 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 noradrenergic stimulation, with tricyclic-mediated changes in sympathomimetic uptake.
What to do
Avoid combining where possible. If used, monitor blood pressure, heart rate and ECG, and reduce the dose of the stimulant if cardiovascular effects occur.
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?
Pro+ members
Unlock the full page
Create an account and start a Pro+ trial to unlock the full management advice for Imipramine and Phendimetrazine, the additional notes, the evidence detail and the whole-prescription interaction checker.
- Full clinical management advice
- Additional notes
- Evidence detail
- Interaction checker for a whole prescription
Try Pro+ free for 14 days on the web. No card needed.
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 Phendimetrazine?
MediHelp rates the interaction as major. Imipramine and Phendimetrazine 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. Phendimetrazine is a sympathomimetic anorectic, and tricyclics can alter the pressor response, raising the risk of hypertension, tachycardia and arrhythmia. Both also can lower seizure threshold.
How serious is the interaction between Imipramine and Phendimetrazine?
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 combining where possible. If used, monitor blood pressure, heart rate and ECG, and reduce the dose of the stimulant if cardiovascular effects occur.
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.
Full monographs, dosing and an interaction checker in the MediHelp app
Open the complete reference, check multi-drug interactions and use dosing tools in the MediHelp app.
