b12 injection bypass mthfr Homocysteine, Vitamin and Folate Level: Possible Risk Factors in the Progression of Chronic Heart and Kidney Disorders How B12 Injections vs Pills
Description
Intramuscular injections can be a bit more uncomfortable immediately than subcutaneous ones but do not usually increase serious complications

If you suspect this as a possibility, ask your GP to test CFP and ESR (inflammatory markers)
nothing crazy but steady

5% identified as Hispanic or Latino ethnicity
