preservative free b12 injections Methylcobalamin 10,000mcg injectable, 10mL (lyophilized) such as Vitamin B-12 Injectable for Horses,
Description
The benefits still out weight the risks of vaccination, it says

Adding a B12 energy shot to your wellness routine can help you stay energized and focusedwithout relying on caffeine, sugar, or other quick fixes

There are capsules, creams, and nasal sprays

If B12 doesnt convert your food into glucose, your body may not get the adequate energy it requires