Comparative Pharmacokinetic Study of Pirfenidone Modified-Release Tablets and Pirfenidone Tablets in Healthy Subjects Under Fed Conditions

A Randomized, Open-Label, Two-Period, Double-Crossover Comparative Study on the Pharmacokinetics of Pirfenidone Modified-Release Tablets and Pirfenidone Tablets in Healthy Chinese Subjects under Fed Conditions Primary objective: To evaluate the bioequivalence of test product and reference product by comparing their plasma concentrations and main PK parameters by oral administration in healthy Chinese subjects under fed conditions using Pirfenidone Modified-Release Tablets (strength: 600 mg/tablet) developed by Overseas Pharmaceuticals, Ltd. as the test product and Pirfenidone Tablets (trade name: Pirespa®, strength: 200 mg/tablet) produced by Shionogi \& Co., Ltd. as the reference product. Secondary objective: To evaluate the safety of Pirfenidone Modified-Release Tablets (test product) and Pirfenidone Tablets (reference product) after oral administration in healthy Chinese subjects under fed conditions.