10 Side Effects of Vitamin B12
Vitamin B12 Side Effect #10: Anaphylaxis
Allergies can be very, very dangerous for us. While they will often cause more than some sneezing, eye irritation and maybe a rash, others can be deadly. What makes them worse is that dangerous allergens can be difficult to avoid. Many people have to be extremely careful on a day to day basis.
In some rare cases, vitamin B12 can cause a severe allergic reaction known as anaphylaxis. Symptoms include severe itching, difficulty breathing and severe swelling. If you do suspect somebody is having such a severe reaction to vitamin B12 or anything else, you should get them to an emergency room as soon as possible.
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