can vitamin b12 be injected subcutaneously Choosing the Right Needle and Syringe for Injections: A Complete Guide Vitamin B12 Injections (Cyanocobalamin Injections)

According to the National Academies of Sciences, Engineering, and Medicine (NAP), a safe highest level is called the tolerable upper intake level. Assessment of what amount is too much is based on animal and human studies, published evidence of adverse events, and professional agreement based on a committee of experts

multiple injections require additional units

elevated triglycerides (defined as 150 mg/dL), decreased High Density Lipoprotein (HDL) (ranges below 40 mg/dL in men and 50 mg/dL in women), elevated blood pressure (defined as systolic blood pressure above 130 mmHg or diastolic blood pressure above 85 mmHg) and elevated fasting glucose (defined as blood glucose above 100 mg/dL)

In that case, a doctor will likely recommend B12 shots to get their levels up to where they should be