Butterbur摘录（Petasites hybridus提取；Petas

. Butterbur extract(Petasites hybridus extract;Petasites japonicus extract). Butterbur rootor leaf extract powder.Theactive ingredient : 15% minPetasins ( petasin + isopetasin).C20H28O3. CAS:[26577-85-5].This extract powder not have S-petasin, because S-petasin melting point is 305C .But petasin and isopetasin melting point just at 65C -72C . So the extract temperature are must lower than 80C.Our butterbur extract bulk powder is the PA free.It is aAnti-histamineand Anti-anaphylaxis..Action : Petasin is responsible for the antispasmodic properties of the plant by reducing ;spasms in smooth muscle and vascular walls, in addition to providing an anti-inflammatory effect by inhibiting leukotriene synthetics.Petasin has also been found to be treat migraine headache, asthma,bronchitis.Butterbur has also been used for cough; urination and stomach problems.Dosage ranges : 50-100 mg twice daily.