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Description
As a result, this approach improves the bioavailability of oral supplemental B12, providing a more reliable source of the nutrient
Common causes include pernicious anaemia (autoimmune), strict vegan diets, gastrointestinal disorders, and long-term use of metformin or proton pump inhibitors

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Independent testing of research-grade peptides purchased online has found purity levels ranging from below 50% to over 100% of stated concentration, along with bacterial endotoxin contamination and incorrect peptide sequences
