Drug interactions
Buspirone + Venlafaxine
Severity: Moderate
Buspirone and Venlafaxine: 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
Venlafaxine increases serotonin and noradrenaline, and with buspirone it may raise the risk of serotonin syndrome. Reports are uncommon, but the effect can be serious.
What this interaction means in plain words
Buspirone and Venlafaxine 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.
Buspirone belongs to Central Nervous System; Venlafaxine belongs to Central Nervous System.
Why it happens
Additive serotonergic effects of venlafaxine reuptake inhibition and buspirone 5-HT1A agonism.
What to do
Start low and titrate slowly. Monitor for agitation, tremor, hyperthermia and diarrhea, and stop the agents if serotonin syndrome occurs.
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 Buspirone
- Buspirone + Isocarboxazid Contraindicated
- Buspirone + Linezolid Contraindicated
- Buspirone + Phenelzine Contraindicated
- Buspirone + Procarbazine Contraindicated
- Buspirone + Selegiline Contraindicated
- Buspirone + Selegiline transdermal Contraindicated
Other interactions of Venlafaxine
- Isocarboxazid + Venlafaxine Contraindicated
- Methylene blue + Venlafaxine Contraindicated
- Phenelzine + Venlafaxine Contraindicated
- Procarbazine + Venlafaxine Contraindicated
- Rasagiline + Venlafaxine Contraindicated
- Safinamide + Venlafaxine Contraindicated
Frequently asked questions
Can I take Buspirone with Venlafaxine?
MediHelp rates the interaction as moderate. Buspirone and Venlafaxine 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. Venlafaxine increases serotonin and noradrenaline, and with buspirone it may raise the risk of serotonin syndrome. Reports are uncommon, but the effect can be serious.
How serious is the interaction between Buspirone and Venlafaxine?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Start low and titrate slowly. Monitor for agitation, tremor, hyperthermia and diarrhea, and stop the agents if serotonin syndrome occurs.
What other medicines interact with Buspirone?
MediHelp also lists interactions of Buspirone with, for example, Isocarboxazid, Linezolid, Phenelzine. The full list is on the Buspirone page.
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