lump at injection site after b12 shot Is A Dog Vaccine Normal? Hard Lump Under Injection Site:

It is also suitable for people who have had gastrointestinal surgeries (like gastric bypass) or have digestive disorders such as Crohns disease, which can impair nutrient absorption

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By Alaiyka Parvez Owner, CoLaz Aesthetics Clinic The short version B12 injections are the standard NHS treatment for proven B12 deficiency, most commonly caused by autoimmune gastritis (pernicious anaemia), some medications, gut surgery, or a long-term vegan diet without fortification

However, certain individuals cannot absorb enough through diet alone, even with adequate intake

In any case, we do not recommend using expired B12 injections at all