Magnesium vs. Vitamin B12: Which Nutrient Supports Your Energy Levels Better ? Energetic and lively with Vitamin B12 Depot Hevert 100 ampoules Vitamin B 12 Injection, 1,000 mcg mL HYDROXOCOBALAMIN INJ, USP, 1000MCG ML, MDV, 30ML NDC 00591288830 NON RETURNABLE Merit Pharmaceutical Staying healthy this time of year starts at the cellular level, and B12 plays a major role., Vitamin B12 supports energy production, nervous system function, red blood cell formation, and immune