Side effects can vary
Advances in Food and Nutrition Research
This means that although most people meet their B12 needs, a significant minority may not have optimal levels, particularly in higher-risk groups
Why it was included in the FDA ban The FDA cites significant safety risks due to the potential for congestive heart failure in certain patients seen in a clinical trial that was terminated
The only way to change concentration is with a new, unreconstituted vial
You can get recommended amounts of vitamin B12 by eating a variety of foods including the following: Beef liver and clams, which are the best sources of vitamin B12 Fish, meat, poultry, eggs, milk, and other dairy products, which also contain vitamin B12 Some breakfast cereals, nutritional yeasts, and other food products that are fortified with vitamin B12