DescriptionPetadolex's doctor-preferred formulation is at least 15% Petasin herbal extract with zero detectable pyrrolizidine alkaloids that can damage the liver it's PA-freeNo harmful side effects, no known drug interactions*Suggested Use:Adults take 1 capsule 3 times daily with meals for 4 weeks. Thereafter, 1 capsule twice daily for 3 months. If necessary increase to 1 capsule 3 times daily. Children ages 10 to 12 years old take 1 capsule daily with meals for 4 months, or as directed by a health care professional.Amount Per ServingExtract of Petasites hybridus (Butterbur root) (28-44:1) Standardized for at least 7.5 of Petasin and Isopetasin50 mgOther Ingredients:Riboflavin (natural coloring), Glycerol, Gelatin, Sorbitol, Titanium dioxideWarningsIf you are pregnant or nursing a baby do not use this product.Petadolex is contraindicated in pregnancy or liver disease.