Short (sensible but boring) answer would be to eat as healthy as possible, try and maintain a constant level of things which might affect your vitamin K intake (don't necessarily get stressed about this) and cut down/avoid alcohol. Personally, I'd concentrate on good food over supplements, unless there was a specific need.

There is a reasonable list of supplements & warfarin interactions at:
http://www.nhssb.n-i.nhs.uk/prescribing/documents/Drugs%20to%20Watch%20with%20Warfarin%20Nov06.pdf
but I'm not sure of a definitive list.

I agree although I've not changed my drinking habits. I drink a few cocktails on weekends still, but I don't binge drink. But yes, eat a healthy diet. If that's concerning as far as your INR, your doc / warfarin manager will adjust your warfarin dose to accomodate your new diet. Just let them know your making changes. I've taken all the supplements you've mentioned with no impact to my INR, although I stopped the vitamin B12 and probiotics at point a couple of years ago since I didn't feel they were really necessary for me. A pharmacist is a good resource for verifying interactions with medications and supplements.

If you're taking antibiotics for the h. Pylori, they may impact your INR so be aware of that.

I take the calcium magnesium and have had no issues.

You might check with a pharmacist to see about possible interactions, but I'll tell you that everyone's body is different, so start with their information and then figure out what is true for you. I remember we had a thread on here eons ago about supplements where one person would be like "well, that had no effect on my INR" and someone else would say it totally knocked theirs for a loop.

Generally, the best plan of action is to add something to your diet and then keep an eye on your INR for a couple of weeks. Maybe check once a week instead of less frequently (if you were up to tests every 2-4 weeks) just to make sure it doesn't have an effect. I wouldn't add everything all at once because then if your INR goes wonky, you have no way to know what did it.

Also, yeah, if you're taking antibiotics, those almost always mess with your INR, so I'd be careful about adding anything else during that time.

Mrs, I've had the odd experience since being home recuperating of watching my appetite disappear, so I'll forget to eat all day long and only become aware of it when I get really fuzzy headed.

I feel the same frustration as you about how to eat and wondering which over the counter stuff is okay/not okay. I asked about my glucosamine/chondroitin/msm this week, as I hadn't had any since being admitted to hospital and my knees and legs are really starting to gripe because of it. I've got the okay for that supplement. Now for the hideous aches to stop!!!

Good luck and it sounds like some of the answers supplied may be able to help you, hopefully.

A bit late but this discussion looks fairly comprehensive:

http://files.www.clotconnect.org/patients/resources/brochures/Natural_supplements-Brochure_May_2013.pdf

Having failed last time to publish an URL, if the above is a garbled mess of angled braces, google:

clot connect natural supplements brochure Waldron

and the pdf at the top should be the one you want.