why do i feel worse after my b12 injection Why do I feel worse

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Anti-Aging & Longevity : Elevates NAD+ (similar to NMN/NR), supporting mitochondrial function, insulin sensitivity, and cellular repair

The AAFPs evidence-based clinical review states directly: Oral administration of high-dose vitamin B12 (1 to 2 mg daily) is as effective as intramuscular administration for correcting anemia and neurologic symptoms in patients with B12 deficiency (Langan RC, Goodbred AJ, American Family Physician, 2017)

This matters for people whose bodies struggle to absorb B12 through food, since an injection skips the digestive absorption step that oral supplements depend on