A Study of the Safety and Tolerability of GA in the Treatment of Patients with Refractory Neuropathic Pain

Patients were first given intracranial injections of GA and observed for 14-28 days, followed by a dose-climbing trial of clozapine medication, and finally, after the investigators had determined an effective dose of clozapine, the patients were given a fixed dose of clozapine orally for three months.