Comparison of toxic heavy metals concentration in medicinal plants and their respective branded herbal formulations commonly available in Khyber Pakhtunkhwa

The present study was conducted on fifteen medicinal plants and their respective branded formulations, commonly used in Khyber Pakhtunkhwa, for the evaluation of toxic heavy metals. The purpose of the study was to assess the toxic profile of the crude medicinal plants with respect to the worldwide permissible limits of metal concentrations and to correlate it with their respective herbal formulations available on the market.