Pirfenidone is an oral antifibrotic medication used primarily to treat idiopathic pulmonary fibrosis (IPF), a condition that causes progressive scarring of the lungs. Pirfenidone works by slowing the progression of lung fibrosis, helping to preserve lung function and improve quality of life. It is taken in tablet or capsule form, with the dosage carefully adjusted by a healthcare provider based on the patient’s response and tolerance. Regular monitoring is required to manage potential side effects and ensure the effectiveness of the treatment.