Vitamin B12 can be found in vitamins or animal products, so why choose an injection over these other ways? An injection of vitamin B12 is more effective than using vitamins or relying on animal products. For people on vegetarian or vegan diets, up to 90% have a vitamin B12 deficiency: even those who take extra vitamins. Unfortunately, our bodies do not always absorb vitamins through our stomach correctly. This can be because of high stomach acid or even age. Vitamin B12 injections bypass the stomach and go straight into the bloodstream. Your body will immediately have access to the vitamin it needs to begin repairing right away. With injections, you will see benefits faster than with vitamins. Another great thing about vitamin B12 is it is one of the few vitamins your body can store. If there is any vitamin B12 your body doesn’t use right away from the injection, it will store it in your liver to use over time, keeping your body healthier for a longer period.