800Motrin is the same as 4 Advils. I took that every night and often 2 at a time during the day.
It took years before it happened, but I can't take it anymore. Don't know what it's done to my liver, but I think it started to burn a hole in my esophagus. I was having terrible heartburn, to the point I was vomiting blood, when I had it. I quit taking it about a year ago. Of the two or three times, I've had heartburn since...it's been when I've tried taking Advil again.
I went with BEG's suggestion of Excedrin Migraine, and am only taking it when I have a severe headache.
The rest of the time, I just accept that my neck hurts.