Butterbur

Butterbur (Petasites hybridus) is a native shrub of Europe, North America, and Asia that has been used by the herbalists for centuries. Modern scientific studies have demonstrated that butterbur supports healthy blood flow to the brain and healthy neurological function. Petasins are the active constituents in butterbur. In addition, butterbur may help to maintain balanced seasonal immune responses. NOW Butterbur is free of undesirable pyrrolizidine alkaloids (PAs), so it is safe to use regularly. Feverfew has similar properties and is included for added synergistic effect.