It's easy to get answers about health and nutrition! Just send your question by email to firstname.lastname@example.org and Dr. Harlan will respond to selected questions of general interest. Answers will be posted in the Ask Dr. Gourmet newsletter (sign up now!) and archived in the Ask Dr. Gourmet section of the website.
I have been using your web site information since going on Coumadin (warfarin) about a year ago. It's been very helpful to me and my wife for adjusting my diet to this medication that I will be on for the rest of my life (artificial heart valve).
I read on one of your replies about parsley being in certain dishes and not combining too many in one day. That made me wonder: how much parsley is in pizza sauce? Is it bad to have 3 slices of pizza for dinner? Should I be more wary about my weekend treat of pizza?
This is a really tough question. If there's parsley listed in the ingredients in your tomato or pizza sauce, it could contain a fair amount of Vitamin K.
Your best choice is to make your own tomato sauce and not use any parsley. For convenience you can look for a tomato sauce that doesn't have herbs in the ingredient list.
Timothy S. Harlan, MD, FACP