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 B12 injections deliver high doses of this essential vitamin directly into your bloodstream for better absorption than oral supplements to boost energy, support red blood cell production and maintain nerve function. A vitamin B12 injection is a shot that delivers B12 directly into your muscle, helping your body absorb it quickly (especially if your body struggles to absorb it from food or tablets) Vitamin B12 Injection MyHydrate Getting The Best Out Of B12: Injections, Pills Or Food: Valley Spinal Care: Chiropractic Clinics B12 Injections vs Tablets: Key Differences Explained