Posted 7/5/2010 11:03 PM (GMT 0)
Generally, when vitamin B12 supplements are taken orally then there is little chance of side effects occurring.
Some people choose to take vitamin B12 administered with an injection. This type of ingestion as been associated with the following side effects:
mild diarrhea
anxiety and panic attacks
heart palpitations
insomnia
breathing problems
chest pain
skin rash, hives or itchy swollen skin
Some health professionals believe that patients develop these reactions not because of the B12, but because of the preservatives that are part of the injection formula.
Kindly,
Kitt