Yes, apple cider vinegar.

I use the 4 ounces of water, 2 Tablespoons of ACV and 1/4 teaspoon of sodium bicabonate (baking soda) formula but some people dont use the baking soda. Some people add honey. I don't.

I take it for a million reasons, use to take it for heartburn/gerd. But it is good for soooooo many things, but I ONLY use Braggs organic ACV with the mother in it, I dont use any other namebrand.

Here is the best place to read real life testimonies and info.:

http://earthclinic.com/

Just go spend days reading, you can type it in or look under remedies or look under supplements. You can find it many places there. I love that place for real life testimony.