It has a part in producing blood cells, nervous system function, and how the body uses folic acid and carbohydrates
Injection Site Reactions: Mild pain, redness, or swelling at the injection site may occur, but these symptoms typically resolve quickly
Interestingly, a recent study in Danish population showed that lower serum vitamin B12 concentrations were significantly associated higher BMI, but a genetic risk score related to vitamin B12 concentrations associated variants was not associated with BMI
However, very high doses may cause side effects such as: B12 can also interact with certain medications, including those used to treat acid reflux, such as Prilosec (omeprazole) and Prevacid (lansoprazole), as well as some diabetes medications, such as metformin
However, its effectiveness can vary, and more research is needed to fully understand its long-term impacts