Drug interactions
Escitalopram + Nelfinavir
Severity: Moderate
Escitalopram and Nelfinavir: 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
Nelfinavir inhibits CYP3A4 and may raise escitalopram concentrations. Higher exposure can increase adverse effects including QT prolongation and serotonergic toxicity. The effect is likely modest because other pathways contribute.
What this interaction means in plain words
Escitalopram and Nelfinavir 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.
Escitalopram belongs to Central Nervous System; Nelfinavir belongs to Anti Virals.
Why it happens
Inhibition of CYP3A4-mediated escitalopram metabolism by nelfinavir.
What to do
Start escitalopram at a low dose and titrate cautiously. Monitor for serotonin toxicity and QT prolongation.
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 Escitalopram
- Cisapride + Escitalopram Contraindicated
- Citalopram + Escitalopram Contraindicated
- Escitalopram + Isocarboxazid Contraindicated
- Escitalopram + Methylene blue Contraindicated
- Escitalopram + Phenelzine Contraindicated
- Escitalopram + Pimozide Contraindicated
Other interactions of Nelfinavir
- Alfuzosin + Nelfinavir Contraindicated
- Avanafil + Nelfinavir Contraindicated
- Dronedarone + Nelfinavir Contraindicated
- Eletriptan + Nelfinavir Contraindicated
- Ergotamine + Nelfinavir Contraindicated
- Flibanserin + Nelfinavir Contraindicated
Frequently asked questions
Can I take Escitalopram with Nelfinavir?
MediHelp rates the interaction as moderate. Escitalopram and Nelfinavir 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. Nelfinavir inhibits CYP3A4 and may raise escitalopram concentrations. Higher exposure can increase adverse effects including QT prolongation and serotonergic toxicity. The effect is likely modest because other pathways contribute.
How serious is the interaction between Escitalopram and Nelfinavir?
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 escitalopram at a low dose and titrate cautiously. Monitor for serotonin toxicity and QT prolongation.
What other medicines interact with Escitalopram?
MediHelp also lists interactions of Escitalopram with, for example, Cisapride, Citalopram, Isocarboxazid. The full list is on the Escitalopram page.
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