Ingrezza Sprinkle is part of the VMAT2 Inhibitors class and treats Tardive Dyskinesia. VMAT2 inhibitors are used to treat chorea or uncontrolled movements associated with Huntington's disease. They work by reducing the activity of certain chemicals in the brain, specifically dopamine, which is thought to lessen the symptoms of chorea. Ingrezza Sprinkle is only available as a brand name drug. Get Ingrezza Sprinkle for as low as $7,741.93, which is 19% off the average retail price of $9,602.47 for the most common version, by using a GoodRx coupon.