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[12] Gastric acid-suppressing agents (proton-pump inhibitors and H-receptor antagonists) diminish dietary B12 liberation from protein complexes, a pharmacodynamic interaction that can exacerbate underlying deficiency

Animal and human bodies absorb, break down, and respond to compounds in different ways

So, while its processing and integrating into your body expect swelling for about a week

The question you ask of a serum B12 test is, does this person have B12 deficiency

With the right guidance, vitamin injections can be a helpful part of a routine focused on feeling clearer, steadier, and more ready for the day ahead.