Western medicine study that shows that Butterbur, Petasites works on runny noses caused by allergies.
Arch Otolaryngol Head Neck Surg. 2004 Dec;130(12):1381-6
http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=pubmed&list_uids=15611396&cmd=Retrieve&indexed=google |
Here is a link that might be useful: study results