Assessment of Intra-subject Variability in the Bioavailability of Chlorpromazine Hydrochloride

Cycle Pharmaceuticals Ltd. (Cycle) is developing an oral tablet formulation of Chlorpromazine Hydrochloride and intends to conduct bioequivalence trials to demonstrate its similarity to the RLD. The aim of this pilot study is to investigate intrasubject variability in the bioavailability of Chlorpromazine Hydrochloride 25 mg sugar coated tablets. Cycle aims to demonstrate that Chlorpromazine Hydrochloride has a shallow dose response curve and a wide safety margin. This will then allow for the modification of bioequivalence acceptance criteria in future pivotal studies which will reduce the number of participants required whilst still maintaining assurance of safety and efficacy. Pilot Subjects (n): 20 Periods: 2 (2xR) Dosing: Single-dose Strength: 25 mg Test Product: N/A Reference: USL PHARMA Chlorpromazine Hydrochloride Analytes (in plasma): Chlorpromazine; 7-Hydroxychlorpromazine Bioequivalence based on 90% CI (Cmax, AUC): Standard; 80.00 - 125.00%