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Drug interactions

Quetiapine + Tazemetostat

Severity: Minor

Quetiapine and Tazemetostat: minor 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

Tazemetostat is a weak to moderate CYP3A4 inducer and may lower quetiapine concentrations. This could reduce antipsychotic effect.

What this interaction means in plain words

Quetiapine and Tazemetostat have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.

Quetiapine belongs to Central Nervous System; Tazemetostat belongs to Miscellaneous.

Evidence level: Low

Why it happens

Induction of CYP3A4 increases quetiapine clearance.

What to do

Monitor psychiatric response and increase the quetiapine dose if effect is lost.

What to ask your pharmacist

  • Is there anything I should notice while taking both?
  • Do I need to tell my doctor at the next visit?

Bring a full list of your medicines, including over-the-counter products, supplements and herbal remedies, to every pharmacy visit.

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Frequently asked questions

Can I take Quetiapine with Tazemetostat?

MediHelp rates the interaction as minor. Quetiapine and Tazemetostat have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Tazemetostat is a weak to moderate CYP3A4 inducer and may lower quetiapine concentrations. This could reduce antipsychotic effect.

How serious is the interaction between Quetiapine and Tazemetostat?

MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor psychiatric response and increase the quetiapine dose if effect is lost.

What other medicines interact with Quetiapine?

MediHelp also lists interactions of Quetiapine with, for example, Adagrasib, Amiodarone, Amisulpride. The full list is on the Quetiapine page.

Full monographs, dosing and an interaction checker in the MediHelp app

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