Inner Mongolia Baiyi Pharmaceutical Co., Ltd.

Primary objective: To compare the differences in absorption degree and absorption rate of loxoprofen sodium patch (specification: 100 mg/patch (10 cm×14 cm); test preparation T) provided by Inner Mongolia Baiyi Pharmaceutical Co., Ltd. and loxoprofen sodium patch (specification: 100 mg/patch (10 cm×14 cm); reference preparation R) certified by Lead Chemical Co., Ltd. in Chinese healthy population under fasting conditions using a single-center, randomized, open, two-preparation, two-sequence, two-period crossover, single-dose administration trial design. Secondary objectives: 1) To evaluate the safety of the test preparation and the reference preparation in Chinese healthy subjects; 2) To evaluate the adhesion of the test preparation and the reference preparation during medication in Chinese healthy subjects; 3) To evaluate the skin irritation of the test preparation and the reference preparation to Chinese healthy subjects.