Drug interactions
Desipramine + Gepirone
Severity: Major
Desipramine and Gepirone: major interaction.
Last updated Sources: US FDA label
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
Both agents can prolong the QT interval, and both increase serotonergic activity, so the combination raises the risk of arrhythmia and serotonin syndrome. Gepirone labeling advises caution with other QT-prolonging and serotonergic drugs. Gepirone is metabolized by CYP3A4, so interactions are mainly pharmacodynamic.
What this interaction means in plain words
Desipramine and Gepirone 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.
Desipramine belongs to Central Nervous System; Gepirone belongs to Central Nervous System.
Why it happens
Additive QT prolongation and additive serotonergic effects through serotonin reuptake inhibition by desipramine and 5-HT1A agonism by gepirone.
What to do
Avoid the combination where possible; if used, obtain a baseline ECG, correct electrolytes and monitor the QTc. Watch for agitation, tremor, hyperthermia and clonus, and stop one drug if serotonin syndrome occurs.
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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References
Other interactions of Desipramine
- Desipramine + Disopyramide Contraindicated
- Desipramine + Dofetilide Contraindicated
- Desipramine + Ibutilide Contraindicated
- Desipramine + Isocarboxazid Contraindicated
- Desipramine + Methylene blue Contraindicated
- Desipramine + Pentamidine Contraindicated
Other interactions of Gepirone
- Clarithromycin + Gepirone Contraindicated
- Gepirone + Isocarboxazid Contraindicated
- Gepirone + Itraconazole Contraindicated
- Gepirone + Ketoconazole Contraindicated
- Gepirone + Linezolid Contraindicated
- Gepirone + Phenelzine Contraindicated
Frequently asked questions
Can I take Desipramine with Gepirone?
MediHelp rates the interaction as major. Desipramine and Gepirone 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. Both agents can prolong the QT interval, and both increase serotonergic activity, so the combination raises the risk of arrhythmia and serotonin syndrome. Gepirone labeling advises caution with other QT-prolonging and serotonergic drugs. Gepirone is metabolized by CYP3A4, so interactions are mainly pharmacodynamic.
How serious is the interaction between Desipramine and Gepirone?
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 used, obtain a baseline ECG, correct electrolytes and monitor the QTc. Watch for agitation, tremor, hyperthermia and clonus, and stop one drug if serotonin syndrome occurs.
What other medicines interact with Desipramine?
MediHelp also lists interactions of Desipramine with, for example, Disopyramide, Dofetilide, Ibutilide. The full list is on the Desipramine page.
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