after b12 injection side effects Vitamin Vitamin B12 Side Effects: Risks

People who have undergone some sort of trauma to the intestines including a gastric bypass or intestinal surgery can be susceptible to vitamin B12 deficiencies since they may have less cells present to produce the protein to which the B12 can attach, resulting in a decreased ability to absorb B12 into the bloodstream

This helps reduce any chance of feeling lightheaded

It took a while to figure out what was going on, but when they reduced her B12 dose to 250mcg three times a week and had her take it in the late morning (when kidneys work best), her symptoms improved and her kidney function stabilized

As such, it is difficult to work out if a B12 deficiency and joint pain are because of correlation or causation