Tylenol 3 contains Codeine, and opiate pro-drug, and acetaminophen -- a Non-Steroidal Anti-Inflamatory Drug, or NSAID. Advil is Ibuprofen and it too is an NSAID. The danger of comining these two very...
There is Acetaminophen in Tylenol with Codeine #3 so there would be no point. You can do it, just don't exceed 4 grams (4,000 mg) of Acetaminophen in a 24 hour period.