Side Effects of B12 Vitamins

Are there side effects with the B12 vitamins?

Even in large doses, B12 vitamins are usually non -toxic.

However, there are people who have experienced adverse effects.

It’s interesting to note that the few who have experienced adverse side effects chose to have B12 vitamin shots administered as an injection.

B12 vitamin injections have long been associated with the following side effects:

Mild diarrhea
Heart palpitations
Chest pain
Anxiety attacks
Skin rash
Breathing problems
Hives or itchy Skin

Health professionals believe that those patients developing adverse symptoms did so because of preservatives used in the B12 vitamin formula designed for injections.

Those who ingest B12 vitamins in tablets form, or sublingual B12 vitamins rarely, if ever, experience an adverse reaction.

Allergic reactions have been noted in those sensitive to the metal cobalt, and there is a research that suggests those who have had heart surgery may run the small risk of complications associated with taking B12 vitamins, as B12 vitamins may narrow arteries surrounding heart stents.