can a b12 injection cause pink urine Why does if body is deficient? Seeing Red: Do B12 Injections

The within-patient percentage change in serum vitamin B12 concentration at each monitoring point will be determined, and the confidence intervals for the difference in the mean values for each arm calculated

In the case of vitamin B12 deficiency, the blood-forming tissues are affected first, but also the nervous system, because vitamin B12 is jointly responsible for the formation of the myelin sheaths in the nervous system

Remember that these injections aren't magic weight loss solutions

your needle may be blocked

Memory problems: Vitamin B12 deficiency can affect cognitive function, leading to memory problems or difficulty concentrating

That is intentional: the two vial sizes reflect two different documented protocols and two different concentration setups, and it is a reminder never to eyeball a dose across vial sizes