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Peptides are chains of amino acids and the digestive system breaks those chains apart, so how much intact peptide reaches circulation orally is not well established

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Absorbed directly into bloodstream No breakdown by stomach acids Consistent, predictable dosing Faster onset of action Vitamin B12 Injections Our exclusive B12 shots are up to 4 times stronger than regular B12 injections

Hartl D, Gaggar A, Bruscia E, Hector A, Marcos V, Jung A, Greene C, McElvaney G, Mall M, Dring G

People may experience multiple symptoms of deficiency anaemia at once

That said: Skin irritation: Some people experience mild scalp irritation, especially with higher-concentration formulations or poorly formulated vehicles