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Integrative Peptides occupies the middle ground
That is the closest thing to a default answer
Oral supplements face challenges in the digestive system, where absorption can be low, mainly in those with certain gut issues
The measurement and frequency indicated here simply reflect what most prescribers recommend for their patients
Before this company existed, your options were limited
At the same time, B12 insufficiency in the liver leads to shrinking of the intestinal cells and malabsorption of nutrients (including B12 itself), leading to a cycle of worsening B12 deficiency
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