Xenazine is used to treat Huntingtons Disease. The generic version is called Tetrabenazine. The average Xenazine cash price is about $3,800.30 for a supply of Tablet 12.5 MG 30 pcs. You can reduce your Xenazine cost by up to 75% with our free Xenazine discount card. Bring it to a participating pharmacy near you to save on your prescription medication.