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However, safe doesnt mean to be used forever. The 2026 consensus is that these are healing tools, not daily vitamins
A typical 5 mg vial reconstituted with 2 mL of bacteriostatic water creates a concentration of 2.5 mg/mL, where 0.1 mL (10 units on an insulin syringe) contains 0.25 mg
But for others, the gut doesnt absorb B12 efficiently due to health conditions, medications, or age-related changes in the stomach lining
You should tailor a B12 supplement to meet your needs and not overdo it because the liver stores B12, and the kidneys send excess vitamin B12 out through urine
That just seems, makes me, puts me at ease when I putting in a medication in myself