I'll echo Gina's comment -- watch out for any and all of the liquid dietary supplements. When my mom, who had CHF and AFIB, and took coumadin, was in the hospital with terminal cancer the doc's wanted to give her liquid dietary supplements. They conveniently forgot her coumadin, until I had to bring them back to reality. Then they asked if I was a doctor or something, as my questions made them really do their jobs. . .
Those liquid meals are high in Vitamin K, so unless you intend to make them a regular part of your diet and dose to the diet, be prepared for an INR roller coaster.