I am a 46 yr old woman. After developing 3 DVT's in my lower rt calf after major foot surgery, I was prescribed Coumadin/Warfarin. My doses have fluctuated between 1mg to 7.5mg (I have just lowered my dose from 6mg to 5mg as my INR yesterday was 3.9). I have noticed a lot of the symptoms listed above (others comments), but have bumbled along. The symptom that is bothering is my mouth! I can hardly eat or talk - my lower jaw especially aches constantly and even despite using an extra soft toddlers toothbrush, my gums bleed profusely. I only read of one other persons symptom regarding teeth/gums/mouth. I know it sounds melodramatic, but my mouth aches as though I had mouth cancer!!! I can't wait to get off this rat poison! Good luck to all.