At first, I was going to answer no, but then I thought about it a bit longer. Yes, I do use vinegar, but not in the way many might think. I do not swallow vinegar by the spoonful. What I do know and do, is as follows:

Vinegar helps to inhibit the absorption of sugars into the blood stream. It also helps to keep things from breaking down into glucose.

So, how do i use it. Well, I eat a lot of pickles, which are pickled in vinegar. I eat salads with vinegar as the main taste in the dressing. So, yes, I do use it, but not in the way many might think.

Here is a link though that talks about using vinegar in a more direct way.

I hope this helps.