Rumex acetosella
Key ingredient in Essiac tea (Rene Caisse cancer formula with Burdock, Slippery Elm, and Turkey Rhubarb). High in oxalic acid and vitamin C. For detoxification and as a sour culinary green. NOT recommended in large amounts.
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Blood thinners, kidney/liver drugs.
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GI upset, kidney stones (oxalates), nausea.
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