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Pirfenidone

Pirfenidone is an active ingredient of the class «immunosuppressive drug».

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Chemical compound

Informational only — not medical advice. Ask a doctor or pharmacist; never change a dose on your own.

What it is used for

ESBRIET is indicated for the treatment of idiopathic pulmonary fibrosis (IPF). ESBRIET is a pyridone indicated for the treatment of idiopathic pulmonary fibrosis (IPF).

US label

Esbriet is indicated in adults for the treatment of idiopathic pulmonary fibrosis.

EMA

How it works

Class: immunosuppressive drug

Common side effects

The following adverse reactions are discussed in greater detail in other sections of the labeling: Liver Enzyme Elevations and Drug-Induced Liver Injury Photosensitivity Reaction or Rash Severe Cutaneous Adverse Reactions Gastrointestinal Disorders The most common adverse reactions (≥10%) are nausea, rash, abdominal…

US label

Pregnancy and breastfeeding

The data with ESBRIET use in pregnant women are insufficient to inform on drug associated risks for major birth defects and miscarriage.

Excerpts from the US prescribing label (public domain), copied without changes.

Interactions

Recorded interactions from open sources (Wikidata, US labels). The list is not complete — ask a pharmacist.

Brand names

United States

Esbriet

European Union

Esbriet · Pirfenidone axunio (previously Pirfenidone AET) · Pirfenidone Viatris

Canada

Auro-Pirfenidone · Esbriet · Jamp Pirfenidone · M-Pirfenidone · Mar-Pirfenidone · Sandoz Pirfenidone

Approval status

US Food and Drug Administration
prescription · since 2014
European Medicines Agency
authorised · since 2011
Health Canada
prescription · marketed
First approval anywhere
2011

Codes

ATC
L04AX05
RxNorm CUI
1592254
ChEMBL
CHEMBL1256391
PubChem CID
40632
UNII
D7NLD2JX7U
Wikidata
Q2060696

Frequently asked questions

What is Pirfenidone used for?

Pirfenidone is used for: Interstitial lung disease, Immune disorder, Idiopathic pulmonary fibrosis, Respiratory disease, and Lung disease.

What kind of medicine is Pirfenidone?

Pirfenidone is an active ingredient of the class «immunosuppressive drug».

What are the brand names of Pirfenidone?

Brand names of Pirfenidone include Esbriet, Pirfenidone axunio (previously Pirfenidone AET), Pirfenidone Viatris, Auro-Pirfenidone, Jamp Pirfenidone, M-Pirfenidone, Mar-Pirfenidone, and Sandoz Pirfenidone.

Medicines in the same class

Sources and licences

Updated November 15, 2026