can b12 injections cause nausea Signs You May Have a Deficiency Vitamin B12 injections for MTHFR:

It can take up to 3-4 months to reverse vitamin B12 deficiency and restore the red blood cell count to normal

The most common adverse events are gastrointestinal: nausea (occurring in 12-33% of subjects depending on dose), diarrhea, constipation, and decreased appetite

10 essential vitamins and minerals designed to improve your health

I was taking this as instructed and working out at the same time and still no difference

According to Infinity Cellular Wellness, complementary nutrients frequently included in IV wellness infusions alongside B vitamins include zinc, magnesium, and glutathione to support immunity and energy metabolism

A natural decline occurs over time in the levels of collagen, with production of new collagen decreasing and existing collagen reducing structural and functional integrity