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[1] Because intrinsic-factor-dependent uptake in the distal ileum can be absent in conditions such as autoimmune gastritis, pancreatic insufficiency, or bariatric surgery, the intramuscular or subcutaneous route bypasses gastrointestinal barriers and reliably restores serum concentrations
Low-quality needles may not maintain sterility during storage
31 History of ear infections
10.1016/j.bbrc.2010.10.130 Biochem
The mechanism story is rich but the human translation is absent
I do wonder if the B12 injections (plus higher vitamin D supplements twice a week) are lowering my magnesium levels, and if I have issues taking it in anyway
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