Pirfenidone is a synthetic pyridone drug. It is an antifibrotic agent with anti-inflammatory and antioxidant properties that is used to treat idiopathic pulmonary fibrosis (IPF), which is a chronic, progressive form of interstitial pneumonia. While its mechanism of action is not yet fully understood, pirfenidone is proposed to primarily regulate tumor necrosis factor (TNF) pathways and modulate cellular oxidation. The FDA first approved pirfenidone alongside nintedanib as one of the first drugs to treat IPF.
Pirfenidone is indicated for the treatment of idiopathic pulmonary fibrosis (IPF). In Canada and Europe, it is approved in adults only.
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