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Vitamin B12 Dosage: How Much Do You Really Need?

Medically reviewed by Lindsay Cook, PharmD The recommended intake of vitamin B12 for people older than 14 is 2.4 micrograms a ...

Vitamin B12 deficiency: Signs, causes, and how to prevent it

Vitamin B12 deficiency develops gradually and affects both the blood and nervous system. It causes anemia, fatigue, numbness, ...