As you may have noticed, there are ads all over the place now promoting alternatives to the Cox-2 inhibitors, such as Vioxx, which have come under fire in the last few months. The traditional NSAIDs, such as Advil, have increasingly concerned consumers because of gastrointestinal problems. This is especially a concern for those with chronic headaches, who may have, early on, taken more than their bodies could safely handle.
There are NSAIDs that are less harsh on the stomach, including Motrin. If you already have stomach problems, you can take your NSAID along with something to protect your stomach, such as Misoprostol