Natterg:
Hi. As far as I know, it's not available from doctors as it is not licensed here. However, you can order it online from pharmacy.ca.
I live in London, ordered mine and it arrived in just over a week. First time you order you will have to wait for them to email you with some questions, but then after that you can order whenever you want.
It's called Avert, not Robinul on the pharmacy.ca site, as Robinul is the American brand name. The actual medication is called glycopyrollate.
I wouldn't want to get your hopes up, as anecdotally it seems to have varying effectiveness for different people, but speaking for myself, it's completely changed my life. I have my confidence back. I hope it works for you.
If you have any questions about it, such as what strength you should get etc, just yell.