puts in your bloodstream. you there's a new one called sglt 2. it works on the level of the kidney. now, david brought up a great point that i want to answer his question. you know why this side effect is occurring? >> when you do this in clinical trials, you're only testing this on 1,000. in the marketplace, it's hundreds of thousands of patients. you might find a side effect you didn't know about. meanwhile, drug reps are hyping this and telling people to use it. it's a good lesson for doctors to not news drugs so fast when they first come out. stick with what works before you go to the new kid on the block without knowing all the side effects. you may miss something in a study. >> i also want marc to mention something about ja noef ya.