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b12 injection take to work Shots for Energy: Do They Work, Who Needs Them & What Expect B12 Injections for Energy: How
Description
Gently swirl until fully dissolved

Also, since you need stomach acid to absorb B12, long-term use of acid-suppressing proton pump inhibitors (such as Nexium, etc.) can lead to B12 deficiency, as can chronic intestinal conditions such as Crohns disease, celiac disease, and intestinal parasites

PMID 6420106

The relationship between B12 and bowel changes is typically indirect, relating more to the supplement formulation, excipients (inactive ingredients), or underlying health conditions rather than the vitamin itself
