Hi. I recently got my results on vitamin B12 and my levels are very low. However my doctor prescribed me injections once per month!!! I know this won't work, so I decided to get them on my own as I know how to inject myself. So my question is - is it possible to buy B12 injections in UK without prescription? If it is, how much they cost? If not / or they are too expensive where I can order them online. Just trusted websites please. Thanks.