Tylenol Back is designed specifically for back pain relief. I got a sample pack of two pills from the Tylenol web page and gave it a try on a day that I had about a level five back pain. It took over an hour to kick in and when it did it cut the edge off and nothing more. I would give it a 3/5 rating. Robax tends to work better for me, but nothing will take away all the pain for me when it gets bad.