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Archived from the original on 13 September 2017
Schultz MB, Sinclair DA
The most telling safety metric is how many people stop taking the medication because of side effects
Your Overall Health Underlying health conditions, such as gastrointestinal disorders (like Crohns disease, celiac disease, or atrophic gastritis) that impair nutrient absorption, or certain medications you may be taking, can influence how your body absorbs and utilizes B12
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