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Drug interactions

Calcitriol + Tazemetostat

Severity: Minor

Calcitriol 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 CYP3A4 inducer and could modestly lower exposure to CYP3A4 substrates such as calcitriol. The clinical effect on calcitriol is expected to be small.

What this interaction means in plain words

Calcitriol 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.

Calcitriol belongs to Musculoskeletal; Tazemetostat belongs to Miscellaneous.

Evidence level: Low

Why it happens

Weak CYP3A4 induction by tazemetostat may slightly increase calcitriol metabolism.

What to do

No routine adjustment is needed; check serum calcium if the response to calcitriol appears reduced.

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 Calcitriol with Tazemetostat?

MediHelp rates the interaction as minor. Calcitriol 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 CYP3A4 inducer and could modestly lower exposure to CYP3A4 substrates such as calcitriol. The clinical effect on calcitriol is expected to be small.

How serious is the interaction between Calcitriol 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: No routine adjustment is needed; check serum calcium if the response to calcitriol appears reduced.

What other medicines interact with Calcitriol?

MediHelp also lists interactions of Calcitriol with, for example, Amlodipine-hydrochlorothiazide-valsartan, Amlodipine-olmesartan-hydrochlorothiazide, Amobarbital. The full list is on the Calcitriol page.

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