who can administer vitamin b12 injections How to self-inject intramuscular - Overview Everything you need to know

While some people may experience a boost in energy within a few days, its important to remember that B12 deficiency can be a complex issue

Therefore, unlike with reduced folates where intestinal absorption is followed by direct incorporation into the liver, some of the UMFA in the portal blood likely bypasses the liver to subsequently bind to folate receptors on peripheral tissues such as the kidney (58)

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The 2024 NICE NG239 guideline on vitamin B12 deficiency in over-16s lists the main groups who need injections: Autoimmune gastritis (pernicious anaemia)

Vitamin B12 (cobalamin) plays a key role in: Making healthy red blood cells (helping prevent certain types of anaemia) Supporting nerve function Helping normal energy metabolism Supporting cognitive function and mood (when deficiency is present) Because the body doesnt produce B12, we rely on dietary sources (primarily animal products and fortified foods) and on absorption through the gut

It can also affect the way the body reacts to alcohol