Can offer something different, pain relief without constricted the blood vessels. this medication seems to do this in early trials. that's what people are talking about in the headache community. >> sanjay, what do you think the chances are that this drug is going to get approval? it is not even being tested here, is it? >> it is hard to say how long it will take to get approval. what's interesting is the third thing, side effects. in some of the early trials, some patients developed liver problems. the liver enzymes went up. if this is toxic to the liver, it may never hit the market. you buil...