Clozaril requires weekly blood tests for the first six months (to make sure that the white blood cell count is not depressed), and bi-weekly blood tests after that.Seroquel, which is similar in mechanism to Clozaril, does not. Zyprexa also does not require any blood tests, but the literature suggests that Clozaril and Seroquel, in small doses,(as little as 50mg.)may be the preferred drugs to use for a Parkinson's patient experiencing hallucinations.For Schizophrenia, doses as high as 900mg./day are used. Carole Hercun,RNC P.S. NON-PD: Dear Arnold: Lighten up! _________________________________________________________ Do You Yahoo!? Get your free @yahoo.com address at http://mail.yahoo.com