Seek urgent same-day assessment or call 999 for emergency care if experiencing: Severe chest pain Severe shortness of breath Fainting or collapse Acute or rapidly worsening neurological deficits (such as new limb weakness, sudden gait disturbance, or bladder/bowel dysfunction) Persistent or worsening anaemia symptoms despite treatmentincluding breathlessness, chest discomfort, palpitations, or extreme fatigueshould trigger medical review
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The lack of intrinsic factor is most commonly due to autoimmune gastritis, which causes an autoimmune attack on the parietal cells that create it in the stomach
Age, certain medications, stomach conditions, and plant-based diets can all interfere with absorption
Home administration requires proper technique, adherence to safety protocols, and understanding of when to seek medical advice