Vitamin B12 is naturally found in animal products such as meat, dairy, and eggs
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Dietary sources rich in B12 include: Meat and poultry : Beef, lamb, pork, and chicken, particularly organ meats like liver and kidney Fish and seafood : Salmon, trout, tuna, sardines, and shellfish such as mussels and clams Dairy products : Milk, cheese, and yoghurt provide moderate amounts Eggs : Particularly the yolk Fortified foods : Many breakfast cereals, plant-based milk alternatives, and fortified nutritional yeast contain added B12 The recommended daily intake for adults in the UK is 1.5 micrograms, according to NHS guidance
Patients with a severe needle phobia, tremors, poor eyesight, or cognitive impairment should have a partner, family member, or healthcare provider administer the injection instead