“…1,2 Thus, some parts of plants, such as leaves, roots, and owers have been widely used. 1,3 However, medicinal plants are not completely free of elemental impurities, such as metals and halogens, which may come from many sources, as pesticides or absorbed from soil. 3,4 Chlorine, bromine and iodine play important roles in living organisms, from essential, up to a certain level, to responsible owing to some dysfunctions, depending on the element and its concentration.…”