what happens if i dont have my b12 injection You Don't Get Enough Vitamin B12? What Are B12 Injections? And

I havent seen any good studies to show that it negates the effects of methotrexate

Oral glucose tolerance tests performed in clinical trials showed no significant changes in glucose handling, and fasting insulin levels remained stable throughout treatment periods

Some warning signs of B12 deficiency can be felt in the face

See Reconstitution, Daily Units, and Cycle Structure

Use only in controlled research environments

If your diet will not allow such food groups, ie Vegans and Vegetarians or you have a medical condition that dictates an intolerance to these specific food groups, it can cause a Vitamin B12 deficiency therefore B12 injections can be very beneficial