What You Need to Know Harvard Health Publishing: The A List for Vitamin B-12 Sources National Institutes of Health Office of Dietary Supplements: Vitamin B12 Grant Chu, MD, MS, MBA, FACP Medical Reviewer Grant Chu, MD, is an associate clinical professor at the David Geffen School of Medicine at UCLA
For adults, the preferred injection site is the outer aspect of the arm
B12 is 659pg/mL and folate is the same (this was 4 days after my most recent injection), also taking a B-complex vitamin daily with 15mcg of b12
Injections are delivered monthly, when possible, but only with a healthcare professional
Documentation availability (e.g., SDS / lot information), depending on batch and format