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Why B12 Shots are Better than Oral Supplements Jul 2, 2025 5 min read Vitamin B12 is essential for many vital bodily functions including red blood cell production, nerve health, and DNA synthesis

Treating folate without checking B12 status

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doi: 10.1056/NEJMoa0909809

Foods like meat, fish, dairy products, and fortified cereals are good sources

Other symptoms of vitamin B12 deficiency Other symptoms of the condition are listed by Bupa as: Feeling very tired Breathlessness even after a little exercise Heart palpitations Headaches A reduced appetite A sore mouth and tongue The health organisation adds: If you have vitamin B12-deficiency anaemia, you may also look pale or jaundiced (have a yellowy tinge to your skin and the whites of your eyes)