can b12 injections cause nausea Signs You May Have a Deficiency Vitamin B12 injections for MTHFR:
Description
It can take up to 3-4 months to reverse vitamin B12 deficiency and restore the red blood cell count to normal
In some cases, a bone marrow biopsy may be necessary
A subcutaneous injection uses a shorter needle to inject the B12 solution into the tissue layer between the skin and muscle, but it may be a slower absorption rate than other methods of administration
I was taking this as instructed and working out at the same time and still no difference
