Valbenazine acute dystonia dosing (IM/IV)?

Valbenazine acute dystonia dosing (IM/IV)?

• A. 1-2 mg IM/IV, may repeat in 30 minutes
• B. 5-10 mg IV hourly
• C. 0.5 mg oral daily
• D. 10 mg IM only

Answer: (A)

Valbenazine is a VMAT2 inhibitor used for tardive dyskinesia and is taken orally as a chronic treatment. It is not dosed intramuscularly or intravenously for acute dystonia, and there is no approved IM/IV form for this medication. Acute dystonia, on the other hand, requires rapid-acting therapy. The standard approach is an anticholinergic given by injection, such as benztropine 1–2 mg IM/IV (repeating if needed after 30–60 minutes), or diphenhydramine 25–50 mg IM/IV. These agents work quickly to relieve the painful, sustained muscle contractions characteristic of acute dystonia, whereas valbenazine acts over days to weeks for tardive dyskinesia and isn’t used for immediate symptom relief.

Valbenazine is a VMAT2 inhibitor used for tardive dyskinesia and is taken orally as a chronic treatment. It is not dosed intramuscularly or intravenously for acute dystonia, and there is no approved IM/IV form for this medication. Acute dystonia, on the other hand, requires rapid-acting therapy. The standard approach is an anticholinergic given by injection, such as benztropine 1–2 mg IM/IV (repeating if needed after 30–60 minutes), or diphenhydramine 25–50 mg IM/IV. These agents work quickly to relieve the painful, sustained muscle contractions characteristic of acute dystonia, whereas valbenazine acts over days to weeks for tardive dyskinesia and isn’t used for immediate symptom relief.