That's what I've heard, though I don't any data to show. In general all medications are the most expensive in the US, often by a lot. For two main reasons: 1.

That's what I've heard, though I don't any data to show. In general all medications are the most expensive in the US, often by a lot. For two main reasons: 1. All other countries are to some extent "free riding" on the US market, and refusing to pay full price. 2. The FDA is doesn't approve a lot of things. So many cheap foreign medications are illegal to import. I heard that many forms of insulin are in this group.