Is White butterbur Poisonous

White butterbur poses a mild toxicity risk to humans upon ingestion. The entire plant contains pyrrolizidine alkaloids, which can lead to poisoning if consumed. When ingested, these alkaloids can cause liver damage and may result in symptoms such as gastrointestinal distress, fatigue, and jaundice. The severity of symptoms can vary depending on the amount consumed and the sensitivity of the individual. As all parts of white butterbur are toxic, caution is advised to prevent accidental ingestion, particularly since the plant is not typically used for culinary purposes. It is important for individuals to recognize white butterbur and ensure it is not mistakenly consumed, as its mild toxicity can still pose health risks.