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b12 injection monograph Cyanocobalamin (B12) 1000 mcg/mL, Multiple Dose Vial 30 mL Vitamin B12 - Wikipedia
Description
It is commonly found in pre-school & school going children
The following factors may increase the likelihood of having a B12 deficiency

You get a series of B12 shots, day-in and day-out, as a way to replenish your body with the B12 that it cant absorb through the stomach

Some individuals report a sensation of body swelling or warmth, but these symptoms typically resolve on their own within a few hours
