Antitussive, expectorant and anti-inflammatory activities of four alkaloids isolated from Bulbus of Fritillaria wabuensis.

Ethnopharmacological Relevance: Bulbus Fritillaria Cirrhosae (BFC), known by the Chinese name "Chuan-Bei-Mu", is used as an antitussive, antiasthmatic and expectorant drug for more than 2000 years in China, and Bulbus of Fritillaria wabuensis S. Y. Tang & S.