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Mount Sinai, Vitamin B12 deficiency anemia, Niranjan N Singh, Florian P Thomas, Alan L Diamond at al, Vitamin B12-Associated Neurological Diseases, Medscape Mathew, A.R

Unlike oral supplements, which must pass through your digestive system, injections ensure maximum absorption and efficacy

Concentrated formula ensures optimal dosage for maximum effectiveness

Check with your doctor immediately if you have any of these side effects

B12 and Intrinsic Factor Intrinsic factor is a protein secreted by the cells of the stomach lining

(25) Interestingly, the bioavailability of vitamin B12 in dietary supplements has been found to be around 50% higher than from food sources