It is used in professional skincare and hair products, and its research-backed concentrations have been well-established
As we age, hormone production changes, and hormone imbalance can occur
Systemic allergic reactions to the benzyl alcohol in bacteriostatic water are extremely rare, especially given the small amounts used, but as with any injection, if you were to develop symptoms like hives, difficulty breathing, or low blood pressure after an injection, seek medical care
Inflammatory bowel syndrome, intestinal lymphomas, vomiting or diarrhea are reported to cause problems in cobalamin absorption
Still, there's little doubt about how debilitating a B12 deficiency can be