Comparison of haloperidol and reduced haloperidol plasma levels in four different ethnic populations

• Published in: Progress in neuro-psychopharmacology & biological psychiatry Vol. 16; no. 2; p. 193
• Main Authors: Jann, M W, Chang, W H, Lam, Y W, Hwu, H G, Lin, H N, Chen, H, Chen, T Y, Lin, S K, Chien, C P, Davis, C M
• Format: Journal Article
• Language: English
• Published: England 01.03.1992
• Subjects: African Americans; African Continental Ancestry Group; China; Chromatography, Liquid; Ethnic Groups; European Continental Ancestry Group; Haloperidol - adverse effects; Haloperidol - analogs & derivatives; Haloperidol - blood; Haloperidol - therapeutic use; Hispanic Americans; Humans; Psychiatric Status Rating Scales; Radioimmunoassay; Schizophrenia - drug therapy; United States; United States; China
• ISSN: 0278-5846
• DOI: 10.1016/0278-5846(92)90070-u

1. Plasma haloperidol and reduced haloperidol concentration were measured in four ethnic populations. 2. Plasma samples were obtained under steady-state conditions and obtained 10-12 hours post bedtime dose and prior to the morning dose. 3. Haloperidol and reduced haloperidol plasma levels were assayed by radioimmunoassay and liquid chromatography. 4. A wide interpatient variability between haloperidol dose and plasma concentration was observed for each ethnic group. 5. The Chinese group differed from the other ethnic populations. 6. A nonlinear relationship was observed between haloperidol and reduced haloperidol plasma levels in each ethnic group. Further, the relationship of haloperidol to reduced haloperidol plasma levels differed for each ethnic group. These results suggest that various ethnic groups could metabolize haloperidol and reduced haloperidol differently.