Astragalus propinquus Astragalus propinquus Astragalus propinquus (syn. "Astragalus membranaceus", commonly known as Mongolian milkvetch in English and as "huáng qí" (), "běi qí" () or "huáng huā huáng qí" (), in Chinese, is a flowering plant in the family Fabaceae. It is one of the 50 fundamental herbs used in traditional Chinese medicine. It is a perennial plant and it is not listed as being threatened. "A. propinquus" is used in traditional Chinese medicine (TCM). "A. propinquus" is an component in Lectranal, a food supplement used in treatment of seasonal allergic rhinitis, though there is limited evidence of its effectiveness. Chemical constituents
Rhinitis asthma developing later in life. Environmental irritants acts as modulators of airway inflammation in these contiguous airways. Development of occupational asthma is often preceded by occupational rhinitis. Among the causative agents are flours, enzymes used in processing food, latex, isocyanates, welding fumes, epoxy resins, and formaldehyde. Accordingly, prognosis of occupational asthma is contingent on early diagnosis and the adoption of protective measures for rhinitis. In the case of infectious rhinitis, vaccination against influenza viruses, adenoviruses, measles, rubella, "Streptococcus pneumoniae", "Haemophilus influenzae", diphtheria, "Bacillus anthracis", and "Bordetella pertussis" may help prevent it. The management of rhinitis depends on the underlying cause.