Important Safety Information
AUSTEDO®can increase the risk of depression and suicidal thoughts and behavior (suicidality) in patients with Huntington’s disease. Anyone considering the use of AUSTEDO®must balance the risks of depression and suicidality with the clinical need for treatment of chorea. AUSTEDO®is contraindicated in patients with Huntington’s disease who are suicidal, or have untreated or inadequately treated depression.
AUSTEDO® is also contraindicated in: patients with hepatic impairment; patients taking reserpine or within 20 days of discontinuing reserpine; patients taking monoamine oxidase inhibitors (MAOIs), or within 14 days of discontinuing MAOI therapy; and patients taking tetrabenazine (Xenazine) or valbenazine (Ingrezza).
AUSTEDO® may cause a worsening in mood, cognition, rigidity, and functional capacity in patients with Huntington’s disease. Tetrabenazine (a closely related VMAT2 inhibitor) causes an increase in the corrected QT (QTc) interval. A clinically relevant QT prolongation may occur in some patients treated with AUSTEDO® who are CYP2D6 poor metabolizers or are co-administered a strong CYP2D6 inhibitor or other drugs that are known to prolong QTc. Neuroleptic Malignant Syndrome has been observed in patients receiving tetrabenazine. AUSTEDO® may increase the risk of akathisia, agitation, and restlessness. AUSTEDO® may cause parkinsonism in patients with Huntington’s disease. Sedation is a common dose-limiting adverse reaction of AUSTEDO®.
The most common adverse reactions (4% of AUSTEDO®-treated patients and greater than placebo) in controlled clinical studies of patients with tardive dyskinesia were nasopharyngitis and insomnia. The most common adverse reactions (>8% of AUSTEDO®-treated patients and greater than placebo) in a controlled clinical study of patients with chorea associated with Huntington’s disease were somnolence, diarrhea, dry mouth, and fatigue.
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