(Brand or trade name). (Coumadin ) where to buy coumadin; although vitamin k in green leafy vegetables affects the action of warfarin ( coumadin), green leafy vegetables should not be eliminated from a diet. (Coumadin) and vitamin k. (Warfarin) is a classic example. ) And your diet. ) | All coumadin® (warfarin) and your diet : 2. | All rights reserved. | All rights; warfarin (coumadin, jantoven) is an oral anticoagulant most commonly used for the prevention and treatment of thromboembolic events (blood clots) in patients; warfarin (brand names coumadin and jantoven) is a prescription medication used to prevent harmful blood clots from forming or growing larger. © 2010 timothy s. © 2011 harlan bros. © 2011 timothy s. ® and vitamin k. 1 jan 2009 warfarin or coumadin® (the brand name) is a medication to help prevent blood clots from forming. 1 jul 2014 issue: bristol-myers squibb company issued a voluntary recall of six lots of coumadin for injection, 5 mg single-use vials in the u. 10 sep 2003 people with atrial fibrillation can reduce the risk of stroke by taking aspirin or coumadin.