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So, we recommend using SL vitamin B12 rather than oral and IM, especially in patients who do not tolerate IM injection and patients who need prolonged vitamin B12 supplementation, such as patients with long-term metformin use and patients with pernicious anemia or with gastro-duodenal resection [51,52,53,54]
Benefits Glycine What it is A naturally occurring amino acid involved in a wide range of physiological functions, including collagen production and neurotransmission
[DOI] [PubMed] [Google Scholar] 81.Metformin and reduced vitamin B12 levels: new advice for monitoring patients at risk
Deficiency is particularly common in elderly people, because the ability to absorb vitamin B12 can decrease with age ( Other people at risk of deficiency include those who have had intestinal surgery, including weight loss surgery
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