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For those with irreversible causes such as pernicious anaemia or malabsorption, injections are usually given every 23 months
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Individuals who have undergone gastrointestinal surgery, particularly gastric bypass or removal of parts of the stomach or small intestine (especially the terminal ileum), are at significantly increased risk due to reduced intrinsic factor production or loss of absorption sites
Hair Regrowth For thinning areas, receding hairlines, or crown loss, dosing must target specific zones
Levels 300-400 ng/mL typical therapeutic targets though individual variation
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