can vitamin b12 injections cause insomnia Signs You May Have a Deficiency Understanding the B12 Vitamin Shot:

The overall improvement in energy levels and metabolism could indirectly contribute to a more stable appetite and reduced cravings

Results from this study suggest that hepatic fat export in periparturient dairy cows is improved by choline supplementation during the transition period and this may potentially decrease the risk for metabolic disorders in the periparturient dairy cow.12 Choline is also known to be involved in the synthesis of carnitine, cell membrane phospholipids, and the neurotransmitter acetylcholine

Therefore, parenteral cyanocobalamin should be administered to a pregnant woman if the benefits outweigh the risks (10, 11)

However, as with any biological therapy, the theoretical possibility of individual hypersensitivity cannot be entirely eliminated, and appropriate monitoring remains prudent