I'm going to try this, but I'm dropping this article here. It sounds like you might want to ensure you get more (even more!) potassium and sodium if you're taking in a lot of vinegar. This woman had some serious problems from having about 8.4 oz of vinegar a day. Granted, that's like 16+ Tblspoons, but still...

http://www.karger.com/Article/Abstract/45180