HHT120

Main research objectives: Evaluate the safety and tolerability of HHT120 capsules after single and multiple doses in healthy subjects. Secondary research objectives: Evaluate the pharmacokinetic characteristics of HHT120 capsules after single and multiple doses in healthy subjects; Evaluate the pharmacodynamic characteristics of HHT120 capsules after single and multiple doses in healthy subjects; Evaluate the correlation between blood drug concentration and pharmacodynamics after single and multiple doses of HHT120 capsules in healthy subjects; Evaluate the pharmacokinetic characteristics of HHT120 capsules in healthy subjects in fasting and postprandial states, and evaluate the effect of food on pharmacokinetic characteristics. Exploratory objectives: Identification of the main metabolites in the human body after a single dose of HHT120 capsules in healthy subjects; The effect of single and multiple doses of HHT120 capsules on the QT interval in healthy subjects.