smallermediumlarger Previous1 2 3 Next Deertongue Amazing Vitamin D Slideshow Pictures Take the Vitamins Quiz In this Article What other names is Deertongue known by? What is Deertongue? How does Deertongue work? Are there safety concerns? Are there any interactions with medications? Dosing considerations for Deertongue. How does Deertongue work? Deertongue contains coumarins, which may thin the blood and cause liver damage. It is not known how deertongue might work for medicinal uses. Are there safety concerns? Deertongue is UNSAFE for use. It can cause liver injury and bleeding.Do not use deertongue if: You are pregnant or breast-feeding. You are allergic to other plants in the Asteraceae/Compositae family, such as ragweed, daisies, chrysanthemums, marigolds, and many others. You have a blood clotting disorder.You are scheduled for surgery in the next two weeks. Deertongue might increase the risk of bleeding. Next: Are there any interactions with medications?Previous1 2 3 Next Report Problems to the Food and Drug Administration You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088. Share this Article: Facebook Twitter Email Print Article STAY INFORMED Get the latest health and medical information delivered direct to your inbox!