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The average diet supplies about 5 to 15 mcg/day of vitamin B 12 in a protein-bound form that is available for absorption after normal digestion
Integr Med (Encinitas)
Shanker G, Allen JW, Mutkus L, Aschner M (2001) Methylmercury inhibits cysteine uptake in cultured primary astrocytes, but not in neurons
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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
Cognitive and mood effect of Alpha-Lipoic acid supplementation in a nonclinical elder sample: an open-label pilot study
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