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Tazverik Dosage

Generic name: tazemetostat hydrobromide 200mg
Dosage form: tablet, film coated

Medically reviewed by Drugs.com. Last updated on Jan 31, 2020.

Recommended Dosage

The recommended dosage of TAZVERIK is 800 mg orally twice daily with or without food until disease progression or unacceptable toxicity.

Swallow tablets whole.

Do not take an additional dose if a dose is missed or vomiting occurs after TAZVERIK, but continue with the next scheduled dose.

Dosage Modifications for Adverse Reactions

Table 1 summarizes the recommended dose reductions and Table 2 summarizes the recommended dosage modifications of TAZVERIK for adverse reactions.

Table 1. Recommended Dose Reductions of TAZVERIK for Adverse Reactions

*Permanently discontinue TAZVERIK in patients who are unable to tolerate 400 mg orally twice daily.

Dose Reduction Dosage
First 600 mg orally twice daily
Second 400 mg orally twice daily*
Table 2. Recommended Dosage Modifications of TAZVERIK for Adverse Reactions
Adverse Reaction Severity Dosage Modification
Neutropenia
[see Adverse Reactions (6.1)]
Neutrophil count less than 1 × 109/L
  • Withhold until neutrophil count is greater than or equal to 1 × 109/L or baseline.
  • For first occurrence, resume at same dose.
  • For second and third occurrence, resume at reduced dose.
  • Permanently discontinue after fourth occurrence.
Thrombocytopenia
[see Adverse Reactions (6.1)]
Platelet count less than 50 × 109/L
  • Withhold until platelet count is greater than or equal to 75 × 109/L or baseline.
  • For first and second occurrence, resume at reduced dose.
  • Permanently discontinue after third occurrence.
Anemia
[see Adverse Reactions (6.1)]
Hemoglobin less than 8 g/dL
  • Withhold until improvement to at least Grade 1 or baseline, then resume at same or reduced dose.
Other adverse reactions
[see Adverse Reactions (6.1)]
Grade 3
  • Withhold until improvement to at least Grade 1 or baseline.
  • For first and second occurrence, resume at reduced dose.
  • Permanently discontinue after third occurrence.
Grade 4
  • Withhold until improvement to at least Grade 1 or baseline.
  • For first occurrence, resume at reduced dose.
  • Permanently discontinue after second occurrence.

Dosage Modifications for Drug Interactions

Strong and Moderate CYP3A Inhibitors

Avoid coadministration of TAZVERIK with strong or moderate CYP3A inhibitors. If coadministration with a moderate CYP3A inhibitor cannot be avoided, reduce the TAZVERIK dose as shown in Table 3 below. After discontinuation of the moderate CYP3A inhibitor for 3 elimination half-lives, resume the TAZVERIK dose that was taken prior to initiating the inhibitor [see Drug Interactions (7.1), Clinical Pharmacology (12.3)].

Table 3. Recommended Dose Reductions of TAZVERIK for Moderate CYP3A Inhibitors
Current Dosage Adjusted Dosage
800 mg orally twice daily 400 mg orally twice daily
600 mg orally twice daily 400 mg for first dose and 200 mg for second dose
400 mg orally twice daily 200 mg orally twice daily

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

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