If you take it before going to bed you will be fine ...don't brush your teeth for about an hour afterwards as it softens enamel...some say to drink it through a straw.
2 tablespoons in a 8 oz glass of water, I used a little more water after to rinse my mouth...I took it the other night last week when I was having a gout attack
It has to be the raw unfiltered apple cinder...I bought Bragg Apple Cider.