Definition of a B12 Shot A Vitamin B12 shot, also known as a cobalamin injection, involves administering the vitamin directly into your bloodstream through an intramuscular or subcutaneous injection
Some peptides are involved in circadian rhythm signaling, growth hormone pathways, metabolism, recovery, and skin health
[1] It is prepared in a 30 mL multi-dose vial with a preservative (2 % benzyl alcohol) for multiple withdrawals
For background and my updated recommendations, see my extended look at vitamin B12 in the related posts below
The absence of effects in the limited human data does not confirm long-term safety
Some users notice altered bowel movements (3-6%), ranging from slightly looser to slightly firmer stools during the initial 1-2 weeks