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Which Works Faster, B12 Injections or Oral Supplements
28 , 644655.e4 (2018)
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Always proceed with extreme caution and thorough preliminary research when combining agents
Injections are particularly appropriate for those with: Pernicious anaemia, an autoimmune condition affecting B12 absorption Conditions affecting the stomach or small intestine, such as Crohns disease or coeliac disease Those who have had gastric surgery or bariatric procedures Strict vegans and vegetarians not meeting their B12 needs through food or oral supplements For those who can absorb B12 normally, oral supplements are generally an effective and well-evidenced alternative to injections
It is nontoxic when fed in high amounts, with dietary levels of over 100 times the daily requirement being shown as safe in most animals
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