It was a store called “B1”, a vitamin store that gave me the first two injections about a week apart. By the end of the 2nd week I was not feeling any neuropathy Cost was about $85/each time. I talked to the nurse and she told me I could do the injections myself at home; just needed to buy the supplies. That’s what I did (they charged me about $600 for the vial which should last about 3 months. I imagine you can get a vial through a dr as vials are available on line @ Amazon for less tha $100. I’ll do that when I run out. You’ll also have to get 3cc syringes, 25ga insulin needles, an adapter to draw up 1cc in the syringe & some alcohol wipes. Administered in butt