I used their website to purchase injectable B12. The site was rather confusing and there was a drop down menu to choose one of three selections. The picture that accompanied the drop down menu had a larger bottle and a smaller bottle. The drop down menu had what seemed to be vials of larger or smaller amounts. I chose smaller doses, but more vials. What I didn't know or understand was the "amp" that was on the short description on the drop down menu. But, the picture looked like what I wanted to buy. I purchased $85 worth of product. When I received it, I was confused as to what the B12 was in. After some research, I found out it was in a glass ampoule, NOT the vials like it showed on the website. After even more research, I found out I needed to get yet another type of need...