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Age and health status can change the dosage
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Gastroenterology 5 (142), 216
Some patients notice increased energy within hours, while others experience gradual improvement over one to two days
The frequency of B12 injections varies based on individual needs: For deficiency correction: Injections may be administered more frequently, such as weekly or monthly, until levels normalize. For maintenance: Once adequate levels are achieved, monthly injections are typically recommended
take it with breakfast rather than dinner
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