One of the side effects of NSAIDS--which advil
) is of that class, is GI bleeding secondary to ulcers.
15 advil (ibuprofen) per day is 3000 mg of IB--which is a LARGE AMT
why are you taking that much???
Please make an apt with your DR to address the possible ulcer and just as importantly--to address the problem which you are taking the advil (ibuprofen) for.
Good luck, stay healthy.