Pain declined 26% in the drug group over the study.

Headache was the most common side effect reported in the drug group.

The market in general was much less vibrant yesterday than the drug group.

Another group of drugs is only somewhat likely to make you feel sick.

The drug group is now up 18 percent since Oct. 8.

Now there are designer drugs for several alternative drug groups.

"Our thinking is, well, that's one less drug group out there," he said.

Were case-fatality rates as expected and similar across drug groups?

A group of drugs called triptans is most often tried first.

Together, they make up the most widely used group of drugs for treating pain conditions.