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Description
Certain groups are more prone to B12 deficiency, including older adults, individuals with gastrointestinal conditions (such as Crohns disease or celiac disease), those who have undergone gastric surgery, or people with dietary restrictions

Potential interactions with insulin and other antidiabetic agents should be considered
10.1097/MD.0000000000001266 35 BrittenhamG

A second group in the same study received a cytokine-containing peptide serum formulation (identified as a Q-Sera-type product)
