G201-Na

Primary objective: To evaluate the safety and tolerability of G201-Na capsules after repeated oral administration of different doses in healthy Chinese adult male subjects. Secondary objectives: 1) To evaluate the pharmacokinetic (PK) characteristics of G201-Na capsules after repeated oral administration of different doses in healthy Chinese adult male subjects; 2) To evaluate the effects of repeated oral administration of different doses of G201-Na capsules on the levels of luteinizing hormone (LH), follicle stimulating hormone (FSH), and testosterone (T) in healthy Chinese adult male subjects, as well as the relationship between dose, blood drug concentration, and hormone levels.

Primary objective: To evaluate the safety and tolerability of G201-Na capsules after a single oral administration of different doses in healthy Chinese male adults. Secondary objectives: 1) To evaluate the pharmacokinetic (PK) characteristics of G201-Na capsules after a single oral administration of different doses in healthy Chinese male adults; 2) To evaluate the effects of different doses of G201-Na capsules on the levels of luteinizing hormone (LH), follicle stimulating hormone (FSH), and testosterone (T) in healthy Chinese male adults, as well as the relationship between dose, blood drug concentration, and hormone levels; 3) To evaluate the relationship between blood drug concentration and QT interval changes after oral administration of G201-Na capsules in healthy Chinese male adults. Exploratory objectives: 1) To explore and identify possible metabolites after oral administration of G201-Na capsules in healthy Chinese male adults; 2) To explore the metabolic excretion of G201-Na capsules in healthy Chinese male adults.