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  1. Vitamin B12 Dosage: How Much Should You Take per Day?

  2. VITAMIN B12 - Uses, Side Effects, and More - WebMD

  3. How Much Vitamin B12 Should I Take Per Day? - GoodRx

  4. Vitamin B12 Dosages: Your GoodRx Guide - GoodRx

  5. Vitamin B12 - Health Professional Fact Sheet

  6. Vitamin B-12 - Mayo Clinic

  7. Vitamin B-12 Oral: Uses, Side Effects, Interactions ... - WebMD