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2018 (3) CD004655
The difference between a research protocol that generates publishable data and one that produces inconclusive results often comes down to compound integrity
Do Vitamin B12 Injections Work Immediately
However, it can take several weeks for the full benefits to be realized, depending on the individual's level of deficiency and response to treatment.
Antacid drugs that neutralize stomach acid, as well as acid-suppressing agents such as proton-pump inhibitors, can inhibit the absorption of vitamin B 12 by preventing its release from food in the stomach
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