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. Reel by REGEN II : Regenerative Medical Solutions (@regen_ii) December 12, 2025 What is the recommended dose for a monthly vitamin B12 (cobalamin) injection ? CYANOCOBALAMIN INJECTION, USP 30000 mcg 30 mL (1000 mcg mL) 30 mL VIAL How Long Do Vitamin B12 Injections Stay In the Body? VITAMIN B12 injections now available at Vitality, Vitamin B12 injections are recommended weekly for 4 weeks, followed by monthly doses to enhance energy levels, improve brain function, aid in