B12 Injections One injection: $25 / Package of 5 injections: $100 Vitamin B12 is commonly used to treat deficiency caused by medical conditions and supplement those at risk including those who have vegans/vegetarian diets, are pregnant/lactating, or are older adults
If your B12 deficiency is due to your diet, you may only need a single shot to normalize your levels, and the rest can be maintained with a nutritious diet
Bibcode:2014MarPB..88..207C
But no matter how much water you choose to use, you would get ten 0.5mg shots out of your 5 mg vial
It typically contains sterile water along with a small amount of preservative, which helps prevent bacterial growth after opening
If you experience unexpected symptoms whilst taking B12, discuss with your GP whether continued supplementation is necessary or whether dose adjustment might help