While medications purchased from a Canadian pharmacy can be much cheaper because the Canadian government is allowed to negotiate the cost of drugs with the manufacturer while the US govt is not, there can be some issues. First of all, it is illegal. But the risk of any sort of prosecution is quite small. Secondly, not all Canadian on-line pharmacies are what they appear to be. Some are fronts for third world manufacturers whose drugs may look like the real thing, but may be counterfeit. So, if you have found a Canadian pharmacy that has been supplying you with the real stuff, then you are probably ok and saving lots of money. If you are determined to purchase drugs from Canada, check out
Verify Pharmacy « Canadian International Pharmacy Association, the Canadian International Pharmacy Association’s website. This site allows you to type in the website address of any online Canadian pharmacy and see if it is properly registered. The previously mentioned Northwest Pharmacy appears to be legitimate.