To date, no cure for TD has been found, and the medication used is still symptom control therapy. There are generally two major classes of drugs used to control tic symptoms, one class of non-psychosuppressive drugs for mild tics, and the other class of typical or atypical psychosuppressive drugs for severe tic disorders. The first category includes colistin, guanfacine, and antiepileptic drugs; the typical psychosuppressive drugs in the second category are haloperidol, Tebretol, and pimozide.