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Effective vitamin B12 replacement should correct a macrocytic anaemia within 2 months and improve or correct neurological signs and symptoms within 6 months

It had long been known that the disease was associated with defects in the gastrointestinal tract: patients had chronic gastritis and lack of acid secretion (achlorhydria)

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Perazella MA (2005) Drug-induced nephropathy: an update

Incorporate B12-rich foods into your meals, such as lean meats like chicken and beef, fish and seafood like salmon and tuna, eggs, and dairy products including milk, cheese, and yoghurt