To Evaluate the Effect of Food on the Pharmacokinetics of Y-4 Tablets in Healthy Subjects

The enrolled subjects will be randomly divided into group AB and group BA, with a total of 10 subjects in each group, all subjects will take one Y-4 tablet (pregabalin 112.5 mg, riluzole 28.125 mg) at each period. Subjects of group AB will take Y-4 tablet under fasted condition in period 1, and take Y-4 tablet under fed condition in period 2. In contrast, subjects of group BA will take Y-4 tablet under fed condition in period 1, and take Y-4 tablet under fasted condition in period 2. There will be 7 days of wash-out between the two periods.