Benefits of a Vitamin B12 Injection, Vitamin B12 injections are commonly used for people who are deficient, struggle to absorb B12 from tablets, or require a faster and more effective boost., Helps Vitamin B 12 Injections Vs Oral Pills: Expert Insights Regenics Blog B12 Injections vs Pills Baltimore: Which Works? Vitamin B12 Injections vs. Supplements: Which is Right for You? What are Vitamin B12 injections Vitamin B12 injections are used to quickly raise your B12 levels when they're low or when your body can't absorb it properly from food or tablets. What B12 Injections vs. Oral Supplements: Which Works Better?