I drink Braggs on wake up and before sleep diluted in water using a straw, and immediately gargle a few times after drinking. This has been going on for about two years now and so far no issues with my teeth. I can't say it has any effect on my health or weight reduction, but at least I manage to maintain my weight you know with the abundance of good food idk if it is due to acv intake, but I feel full easily during meals so I eat less than I should