B12 injections have been high on my list, and I finally took the plunge today! Better absorption is just one of the perks, as it bypasses the stomach. Bloodwork is typically not Hydroxocobalamin Injection: Vitamin B12 for Energy & Anemia 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. Get a vitamin B12 injection for only $15. Buy 2 for $10 each and we will save one for your next visit. Walk ins welcome 7 days a week with convenient locations