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sublingual b12 vs injection Should You Take Natural vs. Synthetic B12? Vitamin b12 Injection | CardioMender,
Description
This preparation is contraindicated in patients who are sensitive to cobalt and/or vitamin B12. As this product contains benzyl alcohol, it should not be used in newborns or in people who are sensitive to benzyl alcohol

M., Cox, J

Brain function Low levels of vitamin B12 have been linked to a decline in brain function

At minimum, check metabolic panels, liver function, lipid profiles, and fasting glucose before starting and every 8-12 weeks during combination therapy
