Thanks for your msg. I have had a bad taste in my mouth all day I keep spraying the tincture in my mouth. I had the mercury removed about 10 years ago (hopefully they did a decent job). My teeth are really yellow. I have never bleached my teeth because I have receeding gums. Does the tooth and gum tincture help with whitening or will the oj fast help? If not any idea how I can get rid of the yellow it is quite embarrasing.