Before taking, speak with your doctor if you are allergic to vitamin b12, have a genetic condition called optic atrophy, have blood in your urine, polycythemia, an ongoing infection, low iron or folate levels, are pregnant or plan to become pregnant, are breastfeeding or plan to breastfeed
Specifically, this is mainly reflected in a reduction in the quantity and abundance of butyrate-producing bacteria, such as CB , FP , Clostridium lavalense , Clostridium cluster XlVa , Blautia faecis , Bacteroides uniformis , Ruminococcus torques , and Roseburia inulinivorans (64, 65)
The Basics: Vitamin B12 in Brief What is vitamin B12
**For any medical procedures, patients may respond to treatment differently, each patients results may vary