b12 injection with syringe Self-injecting vitamin B12. Quick and painless jabs after a B12… | by Dr Caroline Palmer Vitamin B12 Injections and Weight

The multi-faceted basis of vitamin B12 (cobalamin) neurotrophism in adult central nervous system: Lessons learned from its deficiency

Subcutaneous B12 administration, although promising in select cases such as congenital cobalamin disorders, lacks comprehensive comparative studies against IM and oral routes

Possible mild side effects may include: Temporary soreness at the injection site Mild redness or swelling Occasional headache or dizziness Most reactions are mild and short-lived

This test should be used in conjunction with serum B12 and MMA and not as a sole measurement (11, 12)

I had to overcame the initial squick of giving myself a shot first