Was diagnosed with a B12 deficiency a little over 2 years ago with blood levels at 110. I was then prescribed daily sub linguals (1000mg/day). Most recently my levels were at 640.
GP now wants me to stop all supplementation for 90 days, and wants to retest. He says my initial levels were only mildly off and now that I am in a normal range he doubts continued treatment is necessary.
I am confused and a little worried that I will end up feeling like I did before. Not sure what to do. Is this safe?