b12 injection half-life Shots Dosage for Adults: How Much and How Often who is most at risk for developing this deficiency Vitamin B12 for energy metabolism

Discuss all risks and benefits with your doctor, especially if you are pregnant, breastfeeding, or have a history of heart, kidney, or electrolyte disorders

Hj LJ, Rasmussen BS, Dalsgaard PW, Linnet K

You are going to have to give yourself three injections for the full dose of B12

We can advise you on the best option for your situation

Those most at risk include vegans and vegetarians, people with digestive conditions such as Crohn's disease, coeliac disease or IBS, those taking long-term metformin or proton pump inhibitors, older adults whose ability to absorb B12 through the gut declines naturally with age, those with pernicious anaemia, and anyone with a history of chronic alcohol use