Of course it would: I don't understand how taking B12 daily for 2 weeks could not affect levels unless you can't absorb it. If you have elevated B12 and aren't taking it that can be a cause for concern, but taking B12 is the most common reason for elevated levels. See http://www.b12-vitamin.com/blood-levels/ for a good discussion of the causes of high B12. If it's really high there could be other reasons to rule out.
Answered 6/18/2017
656 views
2 doctors weighed in across 2 answers
A doctor has provided 1 answer
A doctor has provided 1 answer
3 doctors weighed in across 2 answers
90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more.
Ask your question