The butterbur (Petasites hybridus) supports the tone of blood vessels in the head. It keeps them pliable so blood can flow smoothly. When your child has healthy blood flow, it causes cranial relaxation. That makes for a healthy, happy head. Butterbur doesn’t just improve blood flow in the head. It also promotes a healthy inflammatory response, which leads to a more comfortable and healthy head. Hear what Dr. Hand thinks is the most important thing to look for in butterbur product.