are there any side effects from vitamin b12 injections What Does a Shot Do for You? B12 Deficiency Why Do I Feel Worse

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

The truth is, it wont

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Dietary tablet supplements of vitamin B12 and fortified foods are usually in the form of cyanocobalamin because it is a more cost-effective form of B12

Experts recommend taking B12 supplements with a glass full of water to optimize absorption