Butterbur plant extract is commonly used in Europe for the treatment of hay fever. A prospective, randomized, double-blind study compared butterbur to fexofenadine (Allegra) and placebo in 330 participants with allergies (allergic rhinitis). The butterbur group took one tablet (8 mg of the active ingredient petasine) three times daily. Both fexofenadine (Allegra) and butterbur were superior to placebo in relieving symptoms. (more…)