Butterbur and Pyrrolizidine Alkaloids
Here is a butterbur extract powder that is made from the aerial portions of the plant. The manufacturer claims that the aerial portions of the plant do not contain the toxic levels of pyrrolizidine alkaloids like the roots and rhizomes do. Does anyone know if these claims are valid? Is there any culture that regularly consumes the aerial portions of butterbur? Thanks in advance for any help!
Here is the product I am referring to: http://wholesale.manufacturer.com/buylead/m10044747-Butterbur+Extractemail@example.com%29.html