Gyre Therapeutics, Inc. is a pharmaceutical company focused on developing and commercializing small-molecule, anti-inflammatory, and anti-fibrotic drugs for organ fibrosis. Its product ETUARY (Pirfenidone) is approved for idiopathic pulmonary fibrosis and is in Phase 3 trials for pneumoconiosis. The company is also developing F351 (Hydronidone) for chronic hepatitis B-associated liver fibrosis (Phase 3) and for liver fibrosis associated with metabolic dysfunction-associated steatohepatitis (Phase 1 completed), as well as F573 for acute/acute-on-chronic liver failure (Phase 2). Preclinical products include F230 for pulmonary arterial hypertension and F528 for chronic obstructive pulmonary disease. Founded in 2002, Gyre Therapeutics is headquartered in San Diego, California, and operates as a subsidiary of GNI USA, Inc.