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Find a supplement with a functional dose: Most of the doses in B12 supplements are between 500 and 5,000 micrograms and will give you enough B12
They are not interchangeable, and the choice depends on symptoms, blood results, and clinical judgement
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Vitamin B12 is crucial for several physiological processes, including: Red blood cell formation deficiency leads to megaloblastic anaemia, characterised by large, immature red blood cells Neurological function B12 is required for myelin synthesis and nerve health DNA synthesis essential for cell division and growth Without adequate B12, patients may develop symptoms such as fatigue, pallor, shortness of breath, glossitis (sore tongue), paraesthesia (pins and needles), and in severe cases, neurological complications including peripheral neuropathy, ataxia, and cognitive impairment
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