is bac water same as reconstitution solution Bacteriostatic vs Guide Bacteriostatic Water vs. Sterile Water:

Before starting Vitamin B12 Injection, it is crucial to discuss potential side effects and risks with your doctor or pharmacist

Another dosing recommendation begins with 1000 mcg daily for the first seven to 10 days, then 1000 mcg weekly for a month, followed by 1000 mcg monthly for life

The injection method allows for efficient absorption of the vitamin into the body, bypassing the digestive system, which can be particularly useful for individuals with certain conditions or factors that hinder proper absorption through the gastrointestinal tract

(PubMed) Smith AD

Vitamin Injections Menu B12 Injections for Energy & Metabolism