unless you drive accross the border, or shop at one of the sites that Nevada monitors, you can't trust sites that claim to be canadian to be canadian. even if they are, canada publicly stated they can't test the drugs they export to the US, and they get half of them from overseas. I read this on fda.gov.
if you want it from merk and you want it cheap, get proscar and cut it in 4ths with a pill cutter.
since merk products cost more, there is a bigger incentive to couterfeit them. read about it in the other general hair loss section. i put a thread there.
proscar went generic recently, so you can get it cheaper at your local pharmacy.