All clinical decisions belong to the patient and an independent licensed prescriber
However, some rare side effects of too much vitamin B12 can include: Headache Weakness Nausea Diarrhea Tingling sensations in the hands and feet Allergic reactions or skin rash (uncommon) When To Seek Medical Advice Risk of vitamin B12 deficiency: Groups at a higher risk of vitamin B12 deficiency include older adults, people who only eat plant-based foods (vegans and vegetarians), and those with certain chronic conditions (gastrointestinal disorders that can affect vitamin absorption)
Zhang Y, Chen S, Wei J, Jiang J, Lin X, Wang Y, Hao C, Wu W, Yuan Z, Sun J, et al
Bacteriostatic Water Side Effects Bacteriostatic water (sterile water + 0.9% benzyl alcohol) is not a drug itself, so it generally causes no intrinsic systemic effects in adults
Several factors influence the choice of needle and syringe: Type of injection : Intramuscular (IM) or subcutaneous (SC) Gauge of the needle : Diameter of the needle Length of the needle : Determines the depth of injection Volume of the syringe : Determines the amount of B12 to be injected 3