We have been selling our Vitamin B12 product for a long time now and I don't know of any customers that have taken it orally. It is a very good quality sterile product, sold for oral use only of course....... but what the customer does with it is up to them. The teeth whitening kit's are exactly the same as the ones sold by the dentist except for the molds, but the molds we sell I find work much better. The custom molds sold by the dentist fit your teeth so well that they leave no room for the carbamide peroxide gel and push it out and away from your teeth. These molds cover more surface area of your teeth. Like I said originally I have looked for a long time ever since I paid $500 for my own kit from my dentist and since then NEVER again. Thanks for the interest and all of your support, keep checking back with us for new products and feel free to make suggestions.