b12 injections allergic reactions Shots at Home: How, Where & How Often to Inject Yourself Managing Vaccine Injection Site Reactions:

It functions by assisting in the formation of a chemical known as myelin, which coats and protects nerve fibres

In fact, one study found that peoples bodies absorbed about 49% of a 1-mcg dose of cyanocobalamin, compared to 44% of the same dose of methylcobalamin ( Conversely, another study comparing the two forms reported that about three times as much cyanocobalamin was excreted through urine, indicating that methylcobalamin may be retained better within your body ( However, some research suggests that differences in bioavailability between the two forms may be insignificant and that absorption could be influenced by factors such as age and genetics ( Unfortunately, recent research directly comparing these two forms of vitamin B12 is limited

This is not a health side effect per se, but it is a consequence of use that certain populations must consider

They can be easily incorporated into salads or cooked dishes