B12 Injections: Are they more effective than supplements? Vivo Life Vivo Life EU Who Should Consider Lipo B12 Injections? Eligibility and Guidelines 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 If you have a low vitamin B12 level, injections can go a long way toward improving your health and well being. But if your B12 level is normal, don't fall for claims that