I think that I am beginning to understand what you mean, Perry. It is far away from the Swedish system. When I was in the pharmaceutical business, there were no numbers (to be seen, at least). Nowadays, all doctors use Rx forms with pre-printed barcodes. I suppose that is some kind of ID, but I know nothing of the system. As far as I know, every doctor is free to prescribe any registered product, as long as it will be used for a registered indication and "according to science and proven experience".