After all, this agrees with the instructions in our Pharmacotherapeutic Compass, and also corresponds well with the viewpoint of two Dutch G.P.s, which I mentioned earlier: this paper, published 11 years ago clearly stated that in people treated with B12 injections, serum B12 should not be measured because it is supposed to be high
Crabtree T, Ogendo JJ, Vinogradova Y, Gordon J, Idris I
U100 means 100 units per milliliter (ml)
You take certain medications: Long-term use of proton pump inhibitors (for acid reflux) or metformin (for diabetes) can interfere with B12 absorption
When B12 levels are low, oxygen delivery and energy metabolism can be affected, leaving you feeling tired or sluggish
NN8022-1807 Study Group