where to administer a b12 injection Administering Safely and Professionally Best Vitamin B12 Injection Sites

Watkins, et al

Once reconstituted (all our pens come pre-mixed), research compounds remain stable for 6 8 weeks under proper refrigeration

That matters if you have trouble absorbing B12 from food or pills, which is more common than most people realize

I have self injected upper arms for the last three or so years now,Ive did hundreds of injections and the only time I feel pain is if Im lucky enough to have a nurses appointment,other than that I feel totally in control of any pain risks and although I admit I still hate doing them its not because its painful its just needle phobia in my case

These kits typically include vials of B12 solution, syringes, and detailed instructions for self-administration