what size needle do you use for b12 injection Choosing the Right and Syringe Injections: A Complete Guide what size needle do i

according to the National Academies of Sciences, Engineering, and Medicine, absorption is approximately 50% at 1 mcg but falls to roughly 1.3% at 1,000 mcg

Individuals most likely to benefit include: Those with pernicious anemia People with gastrointestinal disorders (e.g., Crohns disease, celiac disease, chronic gastritis) Patients following bariatric (weight loss) surgery Older adults with absorption difficulties Strict vegetarians or vegans at risk for deficiency People taking medications that can decrease vitamin B12 levels Laboratory testing usually confirms B12 deficiency before starting injections

The NHS adult daily requirement is 1.5 micrograms a day, which a normal mixed diet covers easily and stores in the liver for years

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