Is it ok to take 2 tylenol (acetaminophen) tablets with 800 mg of ibuprofen?

Not together. Yes, but space them out. When tylenol (acetaminophen) is taking too close to the ibuprofen, they can interfere with each other some, but if you wait for a couple of hours, they enhance pain relief. Don't take ibuprofen on an empty stomach or with dairy products and never take it if you have nausea vomiting, diarrhea, abd. pain, or ringing in ears.