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It is recommended by your healthcare provider that you receive B12 injections on a regular basis according to your individual needs
Passive diffusion accounts for 1.2% of overall absorption, with little effect on bioavailability in patients with pernicious anemia or gastro-duodenal resection [49, 50]
However, the absence of large-scale human safety data means that a comprehensive adverse effect profile has not been fully established
Most peptides are broken down in the digestive system before they enter the bloodstream, which makes them ineffective when taken orally
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