title: Arsenic, mercury and lead taint some herbal products.
mesh_terms: D001151:Arsenic / Q000008:administration & dosage; D007854:Lead / Q000008:administration & dosage; D008515:Medicine, Ayurvedic; D008628:Mercury / Q000008:administration & dosage; D028321:Plant Preparations / Q000737:chemistry*
chemical_list: D028321:Plant Preparations; D007854:Lead; D008628:Mercury; D001151:Arsenic