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Usually, doses are between 1,000 to 2,500 mcg per shot
Lysyl oxidase: Copper is a required cofactor for lysyl oxidase, the enzyme that cross-links collagen and elastin fibers in the extracellular matrix
Vitamin B12 foods: animal and plant-based sources of vitamin B12 Vegan and Vegetarian Sources of Vitamin B12 Can a vegan diet cause vitamin B12 deficiency
Some studies have shown that cyanocobalamin may be better absorbed by the body than methylcobalamin, although the science on that topic is currently mixed
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