Pirfenidonedrug info
pirfenidone 267 MG Oral Tablet
What it is used for
Pirfenidone tablets are indicated for the treatment of idiopathic pulmonary fibrosis (IPF). Pirfenidone is a pyridone indicated for the treatment of idiopathic pulmonary fibrosis (IPF).
Text above is quoted in full from the FDA-approved drug label published by openFDA, effective January 14, 2026. Matched to this product by RxNorm code. Cross-references to other sections of the full prescribing information have been removed, since they point to a document not shown here. Nothing else is changed: no sentence is shortened, reworded or summarised.
Description
Pirfenidone belongs to the chemical class of pyridone. Pirfenidone tablets are available as film-coated tablets containing 267 mg (yellow) and 801 mg (brown) pirfenidone. Pirfenidone has a molecular formula of C 12 H 11 NO and a molecular weight of 185.22 g/mol. Pirfenidone has the following structural formula, which has been referred to as 5-methyl-1-phenylpyridin-2-one. Pirfenidone is a white to pale yellow, non-hygroscopic, crystalline powder. It is sparingly soluble in water, freely soluble in ethanol (96%), and slightly soluble in heptane. The melting point range is 107°C to 111°C. Pirfenidone Tablets are available for oral administration, each pirfenidone tablet contains pirfenidone, 267 mg or 801 mg, as active ingredient and the following inactive ingredients: colloidal silicon dioxide, croscarmellose sodium, ferrosoferric oxide (801 mg), hypromellose, iron oxide red (801 mg), iron oxide yellow (267 mg), lactose monohydrate, magnesium stearate, polyethylene glycol, polyvinyl alcohol, talc and titanium dioxide. Structural Formula
Text above is quoted in full from the FDA-approved drug label published by openFDA, effective January 14, 2026. Matched to this product by RxNorm code. Cross-references to other sections of the full prescribing information have been removed, since they point to a document not shown here. Nothing else is changed: no sentence is shortened, reworded or summarised.
This page reproduces regulatory text for reference. It is not medical advice, and KenyRx is not a pharmacy or a prescriber. Talk to a doctor or pharmacist about whether a medicine is right for you.
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