All pairs

Tetrabenazine and Valbenazine

Desk tier: Avoid together

Mechanism: combined QT load (additive QT prolongation / TdP)

“XENAZINE is contraindicated in patients: … Taking deutetrabenazine or valbenazine”
Xenazine (tetrabenazine), section 4 CONTRAINDICATIONS. DailyMed label

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All pairs for Tetrabenazine · Valbenazine

Educational reference only. Not FDA-cleared. The Prescribing Information governs.