Anlotinib Capsules in the Treatment for IPF/PF-ILDs

"Drug: Anlotinib The dose of nintedanib hydrochloride is 8mg per dose, taken orally once daily before breakfast. The drug is taken continuously for 2 weeks, followed by a 1-week break, until week 52, disease progression, or the occurrence of intolerable adverse events. If a dose is missed and the next dose is due within 12 hours, it should not be made up.~Drug: Placebo Placebo, taken orally once daily before breakfast. Taken continuously for 2 weeks, followed by a 1-week break, until week 52, disease progression, or the occurrence of intolerable adverse events. If a dose is missed and the next dose is due within 12 hours, it should not be made up."

Placebo, taken orally once daily before breakfast. Taken continuously for 2 weeks, followed by a 1-week break, until week 52, disease progression, or the occurrence of intolerable adverse events. If a dose is missed and the next dose is due within 12 hours, it should not be made up.