To add to this most useful post based on now-firsthand experience...

I'm a type1 diabetic using an insulin pump from Minimed (Medtronic). They have branches in Switzerland, and the pump supplies that I use even have the same item numbers to order by as in the U.S. (and with similar retail prices).

I have also gotten my Humalog insulin under the same name here as in the US... maybe not too surprising given it's manufactured by Eli Lilly. The base retail cost is about 55 chf for a 10 mL vial, i.e. about half the price I was paying in California. Oddly I haven't paid exactly the same amount twice for the three times I've filled that prescription now, and have no clue why. Also don't know if the prices vary by canton, or are standardized nationally, etc.

A few more tidbits :
- glucose readings on Swiss meters are in mmoL/L, not mg/dL (cf. US), so if you start talking to a Swiss-trained endocrinologist about blood sugar levels there may be a momentary look of confusion and/or shock before you both realize the need for unit conversions
- the Swiss use insulin pumps on a rental system(!?), or so I'm told by my doctor here...which bothers me profoundly as I tend to think of my pump (which I had to buy) as a necessary extension of myself, just plastic and not squishy. I should probably refrain from further comment, though, not having used this system at all...

Hope that helps someone !