The Commission E Monographs Approved Herbs with Similar Contraindications as Cola nut Ulcers, Gastric and Duodenal Devil's Claw root F.C.  of Angelica root, Gentian root, and Bitter Orange peel F.C.  of Angelica root, Gentian root, and Fennel F.C.  of Angelica root, Gentian root, Wormwood, and Peppermint oil F.C.  of Ginger root, Gentian root, and Wormwood Gentian root Horseradish Indian snakeroot Nasturtium Rhubarb root Watercress