Preventive or therapeutic drugs for fibrosis containing chymase inhibitors as the active ingredient

摘要

A medicament for the prevention or treatment containing a chymase inhibitor, as an effective component, which is a side effect-free, safe medicament for prevention or treatment of fibrosis of the skin or various viscera which suppresses the progression of the condition, prevents the progression of complications, and improves the quality of life of the patient, wherein a quinazoline derivative having the formula (I):or a pharmaceutically acceptable salt thereof is included therein.