Tazverik Dosage

Generic name: tazemetostat hydrobromide 200mg
Dosage form: tablet, film coated
Drug class: Miscellaneous antineoplastics

Medically reviewed by Drugs.com. Last updated on Aug 15, 2024.

Patient Selection

Select patients with R/R FL for treatment with TAZVERIK based on the presence of EZH2 mutation of codons Y646, A682, or A692 in tumor specimens. Information on FDA-approved tests for the detection of EZH2 mutation in relapsed or refractory follicular lymphoma is available at: http://www.fda.gov/CompanionDiagnostics.

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 cut, crush, or chew tablets.

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	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	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	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	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.
Other adverse reactions	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 or Moderate CYP3A Inhibitors

Avoid coadministration of TAZVERIK with strong or moderate CYP3A inhibitors. If coadministration with a strong or moderate CYP3A inhibitor cannot be avoided, reduce the TAZVERIK dose as shown in Table 3 below. After discontinuation of the strong or moderate CYP3A inhibitor for 3 elimination half-lives, resume the TAZVERIK dose that was taken prior to initiating the inhibitor.

Table 3. Recommended Dose Reductions of TAZVERIK for Strong or 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