Amlodipine Besylate/Bisoprolol Fumarate

Primary objective: To study the pharmacokinetics of the test preparation bisoprolol amlodipine tablets (specifications: 5 mg bisoprolol fumarate and 5 mg amlodipine besylate (calculated as amlodipine), produced by Suzhou Hongsen Pharmaceutical Co., Ltd.) and the reference preparation bisoprolol amlodipine tablets (specifications: 5 mg bisoprolol fumarate and 5 mg amlodipine besylate (calculated as amlodipine), produced by Egis Pharmaceuticals PLC) in healthy adult subjects after a single oral administration in the fasting and fed state, and to evaluate the bioequivalence of the two preparations. Secondary objective: To evaluate the safety of the test preparation (T) bisoprolol amlodipine tablets and the reference preparation (R) bisoprolol amlodipine tablets (Kangxinan®) in healthy subjects after a single oral administration in the fasting and fed state.