can b12 injection be given in buttocks Vitamin Sites: All You Need to Know 4 Best B12 Injection Sites:

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

Blood tests measuring serum B12 levels can help determine if your current dosage is adequate

No more Monday highs and Friday crashes

The haematologist's article is really good, as is the stuff on anaemia