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Vitamin B-12 deficiency symptoms Unfortunately, symptoms of a vitamin B-12 deficiency can take years to show up, and diagnosing it can be complex

For pernicious anaemia or malabsorption, intramuscular hydroxocobalamin is the preferred treatment in the UK

Even a small mistake in coding can delay payments, increase denials, and create unnecessary stress for staff

That second pathway explains why prolonged deficiency causes neurological damage and not simply anaemia

If you are concerned about acne whilst taking B12 supplements, it is advisable to discuss this with your GP rather than discontinuing treatment without medical guidance, particularly if the B12 has been prescribed to address a documented deficiency