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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. 2500 mcg vitamin b12 too much - HealthTap

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

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

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

  7. vitamin b12 500 mcg side effects - HealthTap

  8. 1000 mcg b12 too much - HealthTap

  9. is 1000 mcg b12 too much while pregnant? - HealthTap

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