Dietary sources of B12 are almost exclusively animal-derived and include: Meat and poultry Fish and shellfish Dairy products and eggs Fortified foods such as certain breakfast cereals and plant-based milks B12 is absorbed in the small intestine with the help of a protein called intrinsic factor , produced by the stomach lining
In fact, a 2008 study found that after taking a 1,000 mcg oral supplement, only approximately 1.3% (or 13 mcg) of B12 was absorbed into the bloodstream
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Selecting the correct diluent should always be based on the peptide's documented stability characteristics and the objectives of the specific experiment
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The common ones are a little stinging, redness or swelling at the site, a small harmless lump, or occasional bruising if a tiny blood vessel is caught