When you need a refill, on your current prescription, you can request it over the phone or online. If you prefer, you can also fill out the order form and send it in without the prescription. When you have a current prescription on file with refills remaining, you don't need to send in another one.
If you would like the assurance of talking to a real person you can call ahead and set up your account, on the phone, before you mail the form.
Canada-EDrugs offers much the same service. Just go to the Canada-EDrugs web site and follow the instructions.
Send email if you have a prescription question or other problem with this site.