不是中药，可以补充维生素D3，对慢阻肺有帮助。

https://www.healthline.com/nutrition/vitamin-d-deficiency-symptoms?from=singlemessage&isappinstalled=0#section1

A number of studies have found that taking vitamin D supplements at dosages of up to 4,000 IU daily may reduce the risk of respiratory tract infections (7, 8, 9).

In one study of people with the chronic lung disorder COPD, only those who were severely deficient in vitamin D experienced a significant benefit after taking a high-dose supplement for one year (10).