Likewise, autoimmune conditions that affect the stomach lining, such as atrophic gastritis or pernicious anemia, directly impact intrinsic factora protein essential for B12 absorption
The most common side effect is mild soreness or redness at the injection site, and reactions like dizziness or allergy are rare
Clinical assessment and full blood count showing macrocytic anaemia are also important, though neurological symptoms can occur without haematological changes
Adults over the age of 65 Due to a number of common issues associated with ageing, including the reduced production of stomach acid, people over the age of 65 may be more prone to a B12 deficiency
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When administered intravenously or through injection, the Vitamin B12 is not subject to gut absorption and the entire dosage administered is available to the body for use