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With practice, many patients find IM self-injection to be straightforward
Older adults Vitamin B12 deficiency is Vegetarians and vegans Vitamin B12 mainly occurs in animal foods, so people who follow a plant-based diet have a In some cases, a doctor may recommend injections, but Vegetarians or vegans who are pregnant may If the infant is entirely breastfed, they may not consume enough vitamin B12
[1] If during injection a patient experiences chest pain, difficulty breathing, hives, or swelling of the face or throat, it could indicate anaphylactic shock
Gastric surgery, such as weight loss procedures, can also lead to vitamin B12 deficiency by reducing the number of cells needed to secrete stomach acid and intrinsic factor