Potential Side Effects While Vitamin B12 injections are generally safe, some people may experience mild side effects, including: Pain or redness at the injection site Mild diarrhea Itching or rash Headache Dizziness Severe allergic reactions are rare but require immediate medical attention
Second, medications that many older people take, like metformin for diabetes or proton-pump inhibitors for acid reflux, can also impact absorption. Are vegan or strictly vegetarian: Because most dietary intake of B12 comes from animal products, B12 supplements are recommended for people who eat a vegan diet or a vegetarian one with few eggs and dairy products
Depending on the serum you take, you might also get a variety of other vitamins and minerals
Stay informed
However, vitamin C injections are typically only used when vitamin C levels need to be increased quickly or when oral supplements cant be taken due to poor absorption or other reasons
IV doses of 25-400 mcg/kg for safety studies Important: These are experimental doses used in animal studies and cannot be extrapolated to other species due to significant differences in metabolism, pharmacokinetics, receptor expression, peptide degradation rates, and tissue distribution patterns
