Zhejiang Shengbokang Pharmaceutical Co., Ltd.

The main purpose is to investigate the pharmacokinetic parameters of HCD dry suspension under fasting conditions, verify the analysis method of drug concentration in blood and the rationality of blood sampling time, sampling volume, time interval, etc., preliminarily evaluate the relative bioavailability of the test preparation compared with the reference preparation, calculate the intra-individual coefficient of variation, and provide guidance for the dose selection and prescription adjustment of the formal trial. The secondary purpose is to observe the safety of healthy postmenopausal female subjects after a single fasting oral administration of HCD dry suspension and progesterone soft capsules.

Primary objective: To evaluate the bioequivalence of the test formulation, levonorgestrel tablets produced by Naari Pharma Private Limited, and the reference formulation, levonorgestrel tablets (Baustine®) produced by Gedeon Richter Plc., in healthy female subjects after oral administration in fasting and fed state. Secondary objective: To observe the safety of the test formulation and the reference formulation (Baustine®) in healthy female subjects.