What's the best brand of bac water? I forget isn't there one everyone uses? : r Retatrutide Pfizer Bacteriostatic Sterile Water for Injection USP 30 ml vial 25 Box Med Supplies Bacteriostatic Water : r Retatrutide Pfizer Bacteriostatic Sterile Water for Injection USP 30ml Vial How to Store Bacteriostatic Water Safely Confused about whether BAC water needs refrigeration after opening? According to USP standards and Pfizer's own guidance, both room temp (2025C) and refrigeration are acceptable