bac water benzyl alcohol pyrogenic water solution containing 0.9% (9 mL/L) benzyl alcohol as a bacteriostatic preservative Bacteriostatic Water - BAC -

These different strengths are used for various medical purposes: 2 mg/mL: This lower concentration is typically available in smaller ampules (e.g., 2 mg per 0.2 mL or 2 mg per 1 mL) and is often used for pediatric or neonatal use, such as for the prophylaxis or treatment of Vitamin K Deficiency Bleeding (VKDB) in newborns

Many individuals, particularly those under chronic stress or with digestive issues, do not absorb oral B12 efficiently

[PubMed: 15946163] 171

Compounded medications are not reviewed or approved by the FDA

to reassure parents that the vitamin K shot is safe

Genomic studies revealed that widespread cobalamin sharing between microbes can impact microbial growth and metabolism through numerous cobamide-/corrinoid-dependent enzymes and transporter proteins [9,10,11]