DOUBLE VALUE PACK of Life Extension, MIGRA-EEZE BUTTERBUR-GINGER-RIBOFLAVIN 60 SOFTGELS (STDRZD) - In Germany, doctors are recommending a natural extract from the herb butterbur (Petasites hybridus) to those who suffer from regular episodes of head cavity discomfort. In clinical trials in both Germany and the United States, butterbur reduced the incidence of head cavity discomforts by up to 61%.11,12 Butterbur’s principal active constituent, petasin, reduces smooth muscle spasms and helps relax the constriction of cerebral blood vessels. Available for immediate shipment (subject to stock level). ORDER Today!