If you are looking for something to alleviate the bad breathe that occurs on the fast when your body is detoxing, you can drink mint tea on the fast. It is allowed and will help.
Another thing to try (I think learned this trick from reading an old posting here by Tracey----an experienced, knowledgeable faster) is mixing a teaspoon of liquid chlorophyl in a glass of water and drinking. You can get the chlorophyl at most health food stores.
Good luck.