## Question
SUBJECT: vitamin b 12 deficiency
MESSAGE: hi  3 months ago I was diagnosed with vitamin b 12 deficiency.  after treatment with cyanocobalamin my levels have returned to normal thus treatment has stopped.  However I  had a relapse of symptoms such as fatigue loss of appetite  nausea ect. can symptoms be present although levels are normal?  thanks

## Expert Summary
Can I experience symptoms of vitamin b12 deficiency and have normal levels of the vitamin?