Vitamin B12 is a water-soluble vitamin that plays an important role in red blood cell formation, cell metabolism, nerve function, production of DNA, and is one of the most common nutrient deficiencies in the world
Some patients may struggle to absorb enough B12 from diet or oral supplements, especially those with conditions like pernicious anemia, gastrointestinal disorders, or those who have undergone certain surgeries
Contact your GP for persistent worsening symptoms, new neurological problems, irregular heartbeat, or concerns about your response to treatment
Skin redness at the injection site
So, if youre even suspecting you need extra B12, read on to discover what B12 actually is , and how to ensure you get enough of it to stay healthy and well
However, full effects on metabolism and other areas may take 4-6 weeks as it takes time for levels to build up in the body