Drug maker Lupin said it has received approval from the US health regulator to market a generic product, used in the treatment of a lung disease, in the American market.The firm has received approval from the
US Food and Drug Administration (USFDA) to market Pirfenidone tablets in strengths of 267 mg and 801 mg, the Mumbai-based drug maker said in a statement.The company's product is the generic equivalent of La Roche Inc's Esbriet tablets, it added.Pirfenidone is used for the treatment of
idiopathic pulmonary fibrosis.As per IQVIA MAT data, Pirfenidone tablets had estimated annual sales of USD 218 million in the US.