kidney pain after b12 injection Vitamin Injections: Benefits and Risks Pernicious Anaemia: When Your Body

Importantly, suspected neurological involvement from B12 deficiency warrants urgent same-day initiation of parenteral B12treatment should not be delayed while awaiting test results

The body converts Hydroxy B12 into Methylcobalamin and Adenosylcobalamin

Seek medical attention if you experience severe pain that doesn't improve within a day or two, signs of infection (increasing redness, warmth, swelling, or discharge), severe or spreading bruising, numbness or severe pain radiating from the injection site, or fever and chills after your injection

The B12 in your compounded formulation should keep serum B12 levels adequate in most cases, but "most cases" is not "all cases." Verify with bloodwork rather than assuming