* Neurologist Recommended! * The Only Safe, Pure Butterbur * Fast-Acting * For Fast-Acting Relief * Relaxes Blood Vessels in the Head * Brain Health * Dietary Supplement * Fast Acting, Clear-Headed Comfort * Purity, Safety & Performance - Laboratory Tested Petadolex Fast-Acting contains pure butterbur extract to support healthy blood vessel tone in the head, as well as normal blood flow in the brain. The exclusive, patented process (U.S. Patent #6,551,626) removes toxins naturally present in butterbur, making it the ONLY safe form available. The butterbur in Petadolex Fast-Acting has been studied in a neurological clinical trial examining short-term use for immediate support. More than 75% of participants experienced an immediate response that was reported as "good" or "excellent." On average, participants experienced a 54% decrease in the duration of an occurrence. Clinical studies have also shown that Petadolex Fast-Acting is safe, well-tolerated and produces no significant adverse effects, making it effective for fast-acting, clear-headed comfort in both adults and children.