Pirfenidone
Pirfenidone, sold under the brand name Esbriet among others, is a medication used for the treatment of idiopathic pulmonary fibrosis. It works by reducing lung fibrosis through downregulation of the production of growth factors and procollagens I and II. It was first approved in Japan for the treatment of people with idiopathic pulmonary fibrosis after clinical trials in 2008.