Tardive dyskinesia is irreversible. I have severe forms of it including
tardive dystonia, tardive akathesia, tardive myoclonus, tardive tourretticism and tardive psychosis which is a study criteria being researched by a clinicl neurologist. All of these have been clinically confirmed. However, I have found Zofran to be incredibly effective and my neurologist has achieved excellent results from it. There are many other treatments out there.