When levels are low, it can lead to fatigue, low endurance, and relying on stimulants to get through the day
These patients are on a Pernicious Anaemia hospital ward where they were kept alive by eating just cooked or raw liver And imagine the further joy when a decade or so later they were provided with a monthly injection of grown B12
I didnt notice any weight loss
Quick Overview: What is Vitamin B12
While some patients receive these shots at a clinic, many are advised by their healthcare providers to self-inject at home for convenience and consistency
You should contact your GP if: You have been found to have elevated B12 levels on blood tests, particularly if levels exceed 1000 ng/L (approximately 740 pmol/L, though laboratory reference ranges vary) and you are not taking high-dose supplements You develop new symptoms after starting B12 supplementation, including persistent skin rashes, significant gastrointestinal disturbance, or unexplained symptoms You have underlying liver disease, kidney problems, or blood disorders and are considering B12 supplementation You are taking B12 supplements without medical supervision and have not had your levels checked, particularly if taking doses exceeding 2000 micrograms daily You experience symptoms that might indicate underlying disease, such as unexplained weight loss, persistent fatigue, jaundice, or abdominal swelling Call 999 or go to A&E if you develop severe allergic reactions following B12 injections, including difficulty breathing, facial swelling, or widespread rash, as these may indicate anaphylaxis, though this is extremely rare
