Archived (PDF) from the original on 7 January 2020
Also, one less metabolic step is needed for the conversion of hydroxocobalamin than cyanocobalamin
Rarely, an injection causes an allergic reaction
Possible adverse effects may include: Injection site reactions : Redness, swelling, irritation, or discomfort Gastrointestinal symptoms : Nausea, vomiting, stomach cramps, or diarrhea Headaches or dizziness Allergic reactions : Rash, itching, shortness of breath, or facial swelling (rare) Increased heart rate or anxiety (typically temporary from B-vitamins) Fatigue or weakness if used improperly Elevated liver enzymes when taken in excess particularly with methionine or choline Insomnia if taken late in the day due to increased energy levels Who should avoid or use caution
B12 Injections Program Supports healthy vitamin B12 levels for patients exploring energy and wellness support