The human body needs vitamin B12 to make red blood cells, nerves, DNA, and carry out other functions. Vitamin B12 deficiency is relatively common, especially among older people, vegetarians, people on some diabetics pills (like metformin), commonly prescribed heartburn drugs which reduce acid production in the stomach (acid is needed to absorb vitamin B12).
Daily recommended dose by Health Canada is 1000mcg tablets which are to taken once daily as directed by professionals.
Vitamin B12 deficiency symptoms may include:
- Strange sensations, numbness, or tingling in the hands, legs, or feet
- Difficulty walking (staggering, balance problems)
- A swollen, inflamed tongue
- Difficulty thinking and reasoning (cognitive difficulties), or memory loss