Ruby, your doctor is wrong, or isn't keeping up with the journals. Zyprexa -- which really is a very valuable drug for those who need it, so don't think it's all bad -- really does seem to trigger Metabolic Syndrome X in some people, which is the precursor to Type II diabetes. It's not causing diabetes through the weight gain, although it can also cause enough weight gain to trigger Type II diabetes in susceptible individuals. There is also a separate mechanism involved in causing diabetes directly.

You might think of running a search on PubMed for Zyprexa and diabetes and taking him printouts of some of the abstracts.

As for your current situation, I'll bet that he's afraid you'll become addicted to Klonopin, because it's a nasty bad benzo. That's not uncommon, it's a prejudice a fair number of doctors have. It's also not very likely, especially if you've been taking a quarter milligram per day for a while. It's very unfortunate that doctors do this sometimes.

Meanwhile, you might give the Zyprexa a couple of days, to see if the sedation passes. Some of those start up side effects do. Definitely call the doc, though, and tell him what's going on for you now. I hope it helps.