Some have decades of clinical use behind them
Vitamin B12 is essential for keeping your central nervous system healthy, making red blood cells, and creating DNA
Through its signaling effects, it helps the body adapt to physical stress, injury, and repetitive strain while supporting communication between the gut, nervous system, and musculoskeletal tissues
Therefore, parenteral cyanocobalamin should be administered to a pregnant woman if the benefits outweigh the risks.[15][16] Cyanocobalamin is excreted in the breast milk of nursing women in levels similar to the level of vitamin B12 in maternal plasma.[25] The distributed cyanocobalamin in breast milk has been found to be compatible with breastfeeding by the American Academy of Pediatrics.[26] In addition, there has not been any reports of adverse effects associated with the intake of normal daily requirements of vitamin B12 during lactation
your symptoms are new, severe, unexplained or getting worse
In this Review, we focus on the two paracellular flux pathways that are dependent on the tight junction