b12 injection hull Compounded Cyanocobalamin (Vitamin B12) Best Vitamin B12 Injection Sites
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Kraus, D

Most side effects from B12 shots resolve quickly, making them generally well-tolerated for routine supplementation

Optic nerve atrophy can worsen in patients whose methylcobalamin levels are already elevated

However, it does not mean that the B12 supplementation caused the PV to occur
