Hello, I have atrial fibrillation. I suffered four TIA's on Sept. 4th, 2001. During my hospital stay, my blood was thinned with heparin ,I am currently prescribed; Xarelto 20 mg, Diltiazem CD 120mg and Toloxin 0.25 mg for this AF condition. I have had, over the initial two years, three cardioversion procedures, only one lasted for a month or so. Initially I was prescribed Warfarin of strengths as determined by my INR results. I have been on Xarelto since June of 2013. I have become very interested in cleansing my body with herbal supplements such as wheatgrass. I am 65 years of age. I am also prescribed Lorazepam 1 mg and Eltroxin 1 mg. Will herbal supplements, espeacially Wheatgrass have any effect/reaction to any off my prescribed drugs?