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Lysine also helps ensure adequate absorption of calcium and helps form collagen which makes up bone cartilage and connective tissues

Vitamin B-12 is essential for producing red blood cells, maintaining neurological function, and supporting DNA creation

Vitamin B12 replacement is often given by intramuscular injection because absorption through the stomach and small intestine may be inadequate

Vitamin B12 and Metformin The diabetes medicine, metformin, interferes with B12 absorption in the intestine by impeding the calcium-dependent intake mechanism

Cognitive Changes That Signal Deficiency B12 deficiency creates specific cognitive patterns that differ from general anxiety symptoms