Fritillaria pallidiflora and thunbergiiFritillaria thunbergii (Fritillaria) is an antitussive herb and is a potent cough suppressant. It has a broncho-dilation effect and inhibits mucosal secretions. Fritillaria’s traditional use is for relief of coughing and dyspnea (The Pharmacology of Chinese Herbs, pg 275-6). Its active principals are the group of alkaloids found in the bulbs, and its diterpene content may contribute to its anti-tussive effects. It has bitter, cold properties that clear heat and transforms phlegm-heat (Chinese Herbal Medicine Materia Medica, pg 177-8) and dissipates nodules. Fritillaria tends to act in a manner that is similar to dexamethasone, which is used to treat nasal allergy and inflammation.