Hebei Ziweishan Pharmaceutical Co., Ltd.

Primary objective: To study the relative bioavailability of 50 mg roxadustat capsules (test preparation) produced by Hebei Ziweishan Pharmaceutical Co., Ltd. and 50 mg roxadustat capsules (Roxadustat Capsules/Airizhuo®, reference preparation) produced by Fibrogene (China) Pharmaceutical Technology Development Co., Ltd. (reference preparation) in healthy subjects after a single oral administration in fasting/postprandial state, and to evaluate the bioequivalence between the test preparation and the reference preparation. Secondary objective: To observe the safety and tolerability of the test preparation and the reference preparation in healthy Chinese subjects through changes in adverse event incidence, laboratory test results, vital signs and physical examinations.