Can diarrhea cause the INR to go up?
Yes. The bacteria in the intestinal tract produce vitamin K. In diarrhea, these bacteria are often washed out of the intestine. Therefore, the vitamin K they would have produced is not available. Less vitamin K causes the INR to increase. One way to overcome this is to take lactobacillus. You can do this with tablets or with yogurt. Does warfarin cause weight gain? Probably not by itself. However, when people are started on warfarin they are not feeling well. If they are less active and continue to eat the same, they will gain weight. Do you have to avoid bright sunlight while on warfarin? I am not aware of any problems. I live at almost 5,000 feet elevation in one of the sunniest places in the United States and have seen no problems. Can warfarin cause anemia? Anemia means that there is less iron in the blood than normal. Warfarin slows the ability of the blood to clot. If there is a bleeding site somewhere in the body, warfarin will help keep the bleeding going. Warfarin does not cau
