Are there heavy metal differences between teapills, extract powders granules, tablets, capsules, and raw herbs?
Yes, but not particularly due to the form of the product. Heavy metal content in the same product can vary from batch to batch due to a variety of factors including the type of herb, the part used, the environment and condition of the soil and water in which it was grown, the individual harvest, and the cleanliness of the herb (e.g. soil residues contain heavy metals.) Although concentrating an herb tends to concentrate the amount of heavy metals just as it concentrates the active ingredients, the resulting levels of heavy metals in a finished product depends almost entirely on the condition and quality of the raw herbs that are used.
