In more severe or prolonged cases, subacute combined degeneration of the spinal cord can occur a serious neurological complication
Other benefits include: Decrease in anxiety Improvement of quality of sleep Heart health support Immunity boosting Prevents osteoporosis Eases symptoms of morning sickness and decreases the risk of birth defects during pregnancy Reduces the risk of macular degeneration Additionally, vitamin B12 is one of the most important vitamins for hair, skin, and nail health, so another benefit of regular injections includes preventing hair loss and improving skin health and strength of the hair and nails
A temporary feeling of warmth in the area
These compounds play roles in normal metabolic processes and liver function as documented in the nutritional and clinical literature
However, increasing oral supplement doses (within safe limits) while awaiting medical review is generally considered safe, as B12 has very low toxicity and excess is excreted through the kidneys
Hepatology 49 (6), 18771887