B12 Injections Explained Vitamin B12 plays a key role in energy, metabolism, and nerve function. Injections allow direct absorptionespecially helpful for those with low levels or absorption issues. DM to book Vitamin B12 plays an important role in energy metabolism, nervous system function, and red blood cell production. For some individuals, Vitamin B12 injections may be used as part of overall wellness Vitamin B12: A Vital Nutrient for Energy & Well Being Your Wellness Center Vitamin B12 Injection Manufacturer AdvaCare Pharma Vitamin B12 for Seniors Imagine Health Pharmacy Calgary Imagine Health Pharmacy & Travel Clinic