cloudy bac water Bacteriostatic 101: Comprehensive Guide to Its Uses and Storage – SyringesNeedlesDepot Bacteriostatic Water vs. Sterile Water:
Description
Dosing with B12/MIC B12/MIC is most commonly prescribed at a weekly 1ml dose

Injectable vitamin B9 solution

By week three, I was sleeping through the night without waking up from positional discomfort

By comparison, oral B12 supplements are absorbed at roughly 1 to 5% in healthy adults, and even less if you have low intrinsic factor, atrophic gastritis, celiac disease, Crohn's, or a history of gastric bypass
Claims otherwise should be viewed with skepticism
Your vial says milligrams (mg), your syringe says units (U) or milliliters (ml), and suddenly it feels like a math test