Coumarin is found in several plants, including [[Tonka Bean]]s, [[Cassia Cinnamon]], [[lavender]], [[licorice]], [[strawberries]], [[apricot]]s, [[cherries]], [[cinnamon]], [[chamomile]] and [[Sweet Clover]].
==Special Precautions of Coumarin==
* Coumarin can be toxic when used at high doses for a long period
* Coumarin is moderately toxic to the liver and kidneys, with a "Median Lethal Dose" (LD50) of 275 mg/kg
*Coumarin should not be taken while using anticoagulants. It should not be combined with warfarin or other blood-thinning medications, such as anticoagulants or antiplatelets like Coumadin, Plavix, heparin or aspirin or supplements that have the same effect or be used by people with bleeding disorders. It shouldn't be used two weeks before or after surgery. Avoid combination with other Herbal remedies that slow blood clotting like [[garlic]], devil’s claw, [[papaya]], [[ginger]], [[Ginkgo Biloba]], [[Red Clover]] and Asian or Siberian [[ginseng]].