Just a heads-up. Novo Nordisk has an Instant Savings Card that reportedly will reduce your cost on Levemir, Novolog, FlexPens, etc. to $25 per prescription. BUT You have to have primary insurance coverage first, which it does not say anywhere in the terms and conditions. It was very disappointing to think I would pay $25 for a box of pens and end up paying $213 instead. So it's a good deal if you have prescription coverage, but if you don't, just be warned it's not the great deal that it seems.