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Summary:Comfrey (Symphytum spp.) is native to both Europe and Asia and has traditionally been used as both a food and forage crop. Comfrey has traditionally been used both topically, for inflammation, pain and wound healing, and orally, for gastrointestinal, respiratory and gynecological concerns. Although evidence supporting oral use of comfrey is lacking, clinical trials suggest topical comfrey may be advantageous for pain and inflammation associated with injuries. In the past 20 years scientific studies have reported that comfrey may be carcinogenic and hepatotoxic. Various countries, including the United States have asked companies to remove oral comfrey products from the market and topical products are required to advise consumers not to use on broken skin.Scientific Evidence:Uses These uses have been tested in humans or animals. Safety and effectiveness have not always been proven. Read more
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Overview
