Vitamin B12 20mL Protocol Research Peptide Dosing Guide Vitamin B12 Injections Dosage and Frequency Morpheus Medical Aesthetics 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. Vitamin B 12 Injection, 1,000 mcg mL At Home Vitamin B12 4 Week Injection Package MUST BE A FLORIDA RESIDENT