title: A newly developed extract (Ze 339) from butterbur (Petasites hybridus L.) is clinically efficient in allergic rhinitis (hay fever).
authors.affiliation: Max Zeller Söhne AG, Romanshorn, Switzerland. axel.brattstroem@zellerag.de
authors.forename: Axel
authors.initials: A
authors.lastname: Brattström
mesh_terms: D000284:Administration, Oral; D006801:Humans; D036901:Petasites; D008517:Phytotherapy; D010936:Plant Extracts / Q000008:administration & dosage / Q000627:therapeutic use*; D016032:Randomized Controlled Trials as Topic; D012221:Rhinitis, Allergic, Perennial / Q000188:drug therapy*
chemical_list: D010936:Plant Extracts; C476335:Ze 339