can i give blood if i have b12 injections vs Pills: Richmond's Complete Guide B12 Injections for Energy: Benefits

Elevated B12 levels often indicate underlying health conditions such as liver disease, kidney dysfunction, or haematological disorders rather than simple overconsumption

Additionally, people with kidney or liver disease, iron or folic acid deficiencies or bone marrow-affecting conditions should consult their doctor before using B12 injections[18]

Vitamin B12 is involved in the metabolism of every cell of the human body, especially affecting DNA synthesis and regulation, as well as fatty acid synthesis and energy production

Insulin syringes typically come in 28-31 gauge, all suitable for comfortable subcutaneous injection