Hopefully Freddd will weigh in on the injectable B12 question as he does both and would know about dosages. I was thinking the same thing because I'm experiencing terrible pain but the B12 is helping a bit, so I don't want to stop. I found this while searching: "Even though natural toothpastes are a whole lot better than regular toothpaste, they are not the most ideal solution. Here's why: Most brands of toothpaste (natural and otherwise) contain glycerin. The problem with having glycerin in your toothpaste is that it coats your teeth. The glycerin coating is a huge problem because it prevents calcium and other essential minerals from getting to your teeth. Current research shows that your teeth can regenerate. If your teeth are coated with glycerin though, they won't be able to remineralize and regenerate. (See research by Dr. Gerard F. Judd, PhD). Do you want your teeth to fully benefit from eating a nutrient dense diet? Then you need to make sure your teeth are completely clean and free from a glycerin coating on a daily basis." And this company, ( http://www.uncleharrys.com/store/index.php/cPath/48_55 ) offers some natural remineralization products: Remineralization Kit for Tooth Enamel (1 kit) $16.00 When the enamel of our teeth begins to demineralize, we develop sensitivity to cold and heat, and eventually, cavities. Uncle Harry has developed an easy and safe way to correct the erosion of tooth enamel. The three products, Tooth Powder, Miracle Mouthwash, and Remineralization Liquid, used daily, can help to remineralize the enamel of your teeth. They will also stabilize cavities from further deterioration. Your teeth and gums will remain intact, in combination with a healthy diet and Uncle Harry's Mouth Care products. Contains: Uncle Harry's Natural Tooth Powder (2 oz) Uncle Harry's Miracle Mouthwash (2 fl oz) Remineralization Liquid (1 fl oz) OR Remineralization Powder - Peppermint (1 oz)  Maintains an alkaline pH to stop demineralization and tooth decay. Take a pinch of two of the powder in your mouth. Very soon it promotes secretion of saliva. Flush the saliva and powder in your mouth for up to two minutes and spit out. It is not necessary to rinse. Use frequently. Ingredients: Sea salt, calcium carbonate, tabashir, magnetic earth, alkalizer ionic minerals, purified ocean water, organic marshmallow root, organic peppermint, clove, and oregano essential oils. YOU CAN USE FREQUENTLY OR Remineralization Liquid for Tooth Enamel (1 fl oz)  Protects tooth enamel by maintaining alkaline pH and supplying calcium and phosphorus for remineralization. Directions: Shake bottle before using. Put 10 drops in mouth, promotes the secretion of saliva. Swish with the alkaline saliva mixture for up to 5 minutes. Ingredients: Alkalizer ionic mineral water, unrefined mined salt, eucalyptus, peppermint, oregano, clove, and wintergreen essential oils. Anyone have experience with this Uncle Harry product?