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Most people get enough B12 from their diet, but many have absorption issues that mean adequate intake doesnt translate into adequate cellular levels
However preventive measure and drug interactions must be remembered while consuming it
However, head-to-head clinical trials remain limited
It also looks at preventing side effects, whether injections for back pain are safe, and their success rates
Symptoms of real deficiency include fatigue, tingling or numbness in hands and feet, memory and concentration issues, mouth ulcers and pale skin, and a GP blood test is the only reliable way to confirm it
Only other organ meats such as lamb's liver offer comparable concentrations
