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Other factors include: Underlying cause of deficiency : Pernicious anaemia, malabsorption disorders, or dietary insufficiency may affect treatment response Medication use : Metformin and proton pump inhibitors can reduce gastrointestinal B12 absorption (though this does not affect the efficacy of intramuscular injections) Individual variation : Differences in how efficiently your body utilises the injected vitamin Adherence to treatment schedule : Missing injections or delaying maintenance doses can slow recovery Discussing these factors with your healthcare provider helps set realistic expectations for your treatment journey

Fortified Foods : Some plant-based milk, cereals, and nutritional yeast are fortified with Vitamin B12 to help meet dietary needs

COVID-19 Vaccination and Neurological Manifestations: A Review of Case Reports and Case Series

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