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Stages of life, lifestyle changes, diet and health conditions all impact the amount of vitamin B12 you need to avoid a deficiency
Most patients experience no adverse effects, and when present, theyre typically mild and transient including temporary digestive changes as the gut adjusts, minor nausea (usually resolving within days), or altered bowel patterns during initial therapy
doi: 10.1093/ajh/hpw113 103 ZhuXPanYLiYJiangYShangHGowdaDCet al
Adding peptide testing would require mass spectrometry equipment and trained personnel
This ensures optimal absorption without interference from food or digestive processes
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