is sterile water the same as bac water vs Bacteriostatic Water (BAC Water) – 10ml Sterile Diluent for Injections BAC WATER | Bacteriostatic Water

Other than some fatigue it does curb appetite pretty well

Groups at higher risk of deficiency include older adults (due to reduced stomach acid production), people following vegan or strict vegetarian diets (as B12 is naturally found almost exclusively in animal products), individuals with pernicious anaemia or other malabsorption conditions, those taking certain medications such as metformin or proton pump inhibitors long-term, and people with significant nitrous oxide exposure (including recreational use), which can inactivate B12 in the body

Response: CMS reviewed the comments that suggest a revision to the proposed regulatory text and is in agreement with suggested change

Injection of B12 is safe, simple, and cheaper

Its function is bacteriostatic, meaning it inhibits the growth and reproduction of bacteria, which allows for safe, repeated withdrawals from the same vial