Finally, the biggest risk is for people who have pernicious anemia, a rare condition in which a person is unable to absorb any B12 through their stomach or intestines people with this condition are the ones who actually need B12 injections
Vitamin B12 is found naturally in many foods, including fish, seafood, liver, beef and dairy products and is added as a supplement to foods like cereals, to help ensure proper nutrition
Allergic Reactions to B12 Injections Though rare, anaphylactic reactions (strong allergic responses) have been reported to either cyanocobalamin or hydroxocobalamin
Like many other medications, B12 injections require a doctors prescription and cant simply be purchased over the counter
FAQs Vitamin B12 Injection Luton How quickly does a B12 injection work