As a result, breathing may become difficult, which may cause coughing, a whistling sound (wheezing) when exhaling, and shortness of breath. When asthma first develops, environmental factors like pollen, animal dander, dust, or smoking are typically to bla...

Botanical drugs consist of vegetable material, algae and macroscopic fungi. They are used in treatment of various diseases, such as central nervous system disorders, cardiovascular diseases, infectious diseases and respiratory diseases.