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Description
It's when your body can't make intrinsic factor, the protein needed to absorb B12

Herrmann W et al., Osteoporos Int 2009 B12, homocysteine, and bone health

When should I feel better after the injection

Vitamin B12: Boosts energy, focus, and overall metabolic performance

Product Details Support essential body functions with high-strength methylcobalamin B12 injection 1500mcg, designed for efficient absorption and reliable vitamin B12 supplementation