Allergic Reactions to B12 Injections Though rare, anaphylactic reactions (strong allergic responses) have been reported to either cyanocobalamin or hydroxocobalamin
Community-reported effects (nausea, GI discomfort, headache) come only from anecdotal vendor/forum sources, not controlled studies
When to seek medical attention: Patients should call 999 immediately for severe allergic reactions (facial swelling, breathing difficulties, widespread rash)
It is also involved in producing certain important brain chemicals and supporting nerve function
High doses of B12 have been proven to provide incredible health benefits, including weight loss
pH 5.0 to 7.0.Water for Injection, is chemically designated H2O.What is the purpose of sterile water for injection