Petadolex is the same brand of butterbur root extract used in medical research;COMPARE: Only Petadolex is made in Germany using a patented process for removing butterbur toxins - it's PA-free with zero detectable pyrrolizidine alkaloids that can damage the liver;Neurologist-recommended because it's standardized (at least 15% Petasin herbal butterbur extract);A safe, protective alternative to OTC and Rx drugs - and their serious side effects;Used and trusted since 1972
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