People with heart conditions who take vitamins may be less likely to take some of their other medications properly, according to a new study. Researchers from the Intermountain Medical Center in Utah asked 100 people with an irregular heartbeat -- known as atrial fibrillation -- what they knew about warfarin (Coumadin), a commonly prescribed blood thinner. The patients were also asked how well they followed their prescription for the drug, and whether or not they also took vitamins or other supplements.
