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If the deficiency is severe, remarkably, it can lead to permanent nerve damage
For routine supplementation, adults should follow the directions on the product label
Where to Inject B12 First, decide whether youll inject subcutaneously or intramuscularly
A vitamin B12 injection delivers the vitamin directly into your muscle
Scientific Classification A stabilized 44-amino-acid class B1 peptide-receptor ligand
Despite these points, for studies where efficacy and precise control are paramount, the benefits often outweigh the logistical hurdles
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