Page 14 - 2018 SP Product Guide
P. 14

Our philosophy

            To professional supplements
                                                Wild Yam: identifying quality issues
            We are committed to actively support natural health
            care professionals and passionately advocate for   There are around 600 species of Yam,   Commercially available Dioscorea villosa is
            quality, efficacy and safety to benchmark natural   many of them wild species that flourish in  in the form of dried roots, usually
            supplements to the highest of standards. In   damp woodlands and thickets. Dioscorea   harvested at the end of summer or fall
            particular, our founder, Kerry Bone, was integral in
            establishing professional standards of the industry,   villosa (also known as Colic Root or Wild   when the plant is dying back to its
            including leading MediHerb  discovery of the   Yam) is a twining, tuberous vine native to   rootstock. It was found that these roots
            adulteration of a commonly available Bilberry   eastern North America. The roots initially   contained only very small amounts of
            extract—the catalyst for a global change in testing   taste starchy, but soon after are bitter and   dioscin, not the predominance
            regulations. We invest significantly in our profession   acrid—nothing like the taste of Yam or   as previously thought. The major saponin
            by funding clinical trials. Our reputation for scientific
            knowledge means we often collaborate on projects   Sweet Potato. Commercial Wild Yam   found in the fall-harvested roots were in
            investigating herbal applications, so we apply   extracts available for use as raw materials   fact the furostanol-based saponins,
            stringent criteria to assess viability. The trial must fit   are often from Dioscorea opposita (Chinese   methylparvifloside, and
            with our philosophy of superior quality, innovative,   Yam Root), which has a different   methylprotodeltonin, while the
            and holistic herbal solutions, and must be conducted   phytochemical profile. It is widely   spirostanol-based saponins, Zingiberensis
            at a reputable research establishment. We do not
            fund or involve ourselves with research that utilizes   misconstrued that Dioscorea villosa contains   saponin I and deltonin, were the major
            animals as human models. As practicing clinicians,   diosgenin and many products have this as  saponins for samples harvested in
            we also regularly conduct professional seminars for   a statement on their labels. However it   summer. The storage saponins from the
            health care professionals and are dedicated to being   does not contain diosgenin, but rather the  fall differ from the summer saponins by
            a key source of knowledge for the natural health   diosgenin precursors. Unfortunately, the   the presence of an extra glucose molecule.
            care profession. Through our website, mediherb.
            com we also provide extensive clinic and reference   phytochemical profile of Wild Yam is   The two main compounds found in
            tools, library resources and webinars.  poorly defined and based on outdated   commercial material—harvested in the
            To ingredients                      scientific literature, so we undertook a   fall—are significantly different as they
                                                                                 contain extra glucose residues.
                                                project in conjunction with Associate
            We handle and process raw materials with the   Professor James De Voss from the
            utmost of care. As the largest purchaser and   University of Queensland Australia to
            processing plant of herbs in Australia, we assist   investigate its phytochemistry.
            growers with support on varietal selection, climatic                                    Dioscorea villosa
            and soil requirements, time of harvest, harvesting
            techniques, drying parameters and storage
            requirements. Where possible, we source
            organically grown and wild-crafted herbs, including
            internationally where conditions and handling
            requirements are the optimum. For example, Cat’s
            Claw from Peru. We work with growers to help
            cultivate endangered species and our unique
            system of identifying and classifying any threat
            allows us to immediately find alternatives or reduce
            that threat. Our commitment to efficacy has also
            uncovered examples of substitution including
            Echinacea, commercial Wild Yam, Cat’s Claw and
            Golden Seal. If any herb does not meet our
            standards, we go out of stock rather than supply an
            inferior product, so you can always be confident in
            consistent results with patients from batch to batch.

                                                                                 Our philosophy • MediHerb  Product Catalog 2018  13
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