As long as there are no concerns with kidney function then adding aspirin to tylenol and coversyl is fine. However there is much debate about the use of aspirin and regular NSAIDs such as advil, so if you want to add this in and you are taking regular advil, then you need to discuss the benefits and risks with your doctor.
Who has suggested adding in the aspirin?
I have only heard about it on TV or perhaps surfing the net. I will discuss with my doctor.