الفهرس 
Literature ReviewOnly 14 pages are availabe for public view
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Abstract
With the ever-increasing use of herbal medicines worldwide and the rapid expansion of the global market for these products, the safety and quality of herbal medicinal products have become a major concern for health authorities, pharmaceutical industries and the public (Organization 2007).
from time to time, undesirable and/or undeclared substances have been present or have been purported to be present in herbal medicines or medicinal plants in many parts of the world. These substances have included pesticides, radioactive particles, and microbes, including pathogens, mycotoxins, heavy metals.(Organization 2007).
Three herbal teas’ laxative tea, Anti-Diarrheal tea and Calm tea were chosen as examples of herbal teas and subjected to certain quality control tests, along with their individual constituents.
Literature was collected around their phytochemical constituents and their biological activity. Data obtained were tabulated and quality control tests, and their results were summarized.