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  1. is 2500 mcg of b12 too much - HealthTap

  2. is 2500 mcg of b12 too much to take at once? - HealthTap

  3. is 2500 mcg a day too much of vitamin b-12? - HealthTap

  4. is vitamin b12 2500mcg a day too much? - HealthTap

  5. 2500 mcg vitamin b12 too much - HealthTap

  6. vitamin b12 500 mcg side effects - HealthTap

  7. is 2500 mcg the same as 25 mcg? - HealthTap

  8. is 5000mcg of b12 too much? - HealthTap

  9. b12 500 mcg every day, safe? - HealthTap

  10. Is 2500 mcg of vitamin b12 to much for one day for a 17