How can I get amisuplride (solian) in the US?

I wanna try this med in the place of Seroquel, out of all the other aaps barring geodon this drug seems to have pharmocokinetics close to Seroquel. I am totally dependent on Seroquel but I have gained 55lbs steadily over the past year. In two years I will be extremely obese, this doesn’t sit well with me.