Brand name: Pirfenex
Generic name: Pirfenidone
Manufacturer: Cipla Ltd.
Pirfenidone is used for the treatment of idiopathic pulmonary fibrosis (scarring of the lungs with an unknown cause). Pirfenidone is in a class of medications called pyridones. It works by blocking the action of a certain natural substance in the body that is involved in causing fibrosis.