Is it safe to buy prescriptions on websites that operate outside the us (like canada, but could be countries with dissimilar regulations like india)?

Buyer beware: Other countries don't necessarily have the same regulatory oversight of pharmaceutical manufacturing as is the case in the US. What the seller says you are getting, and what is actually in the bottle, may be two different things. When it comes to your health you should be very careful.

Caution!: Be very careful. Talk about it with your doctor. We can never tell you that a med from another country is okay, when we have no knowledge of their standards for manufacturing the drug. I would not do it. for myself, or anyone I care about at this time. If you cannot afford a US approved med. Ask your doc for resources for help paying for it (often the drug company will be able to help).