Good advice, 3mgs. Alternating the 2 is a good option. My dentist advised me not to take Ibu and Tylenol at the same time but alternating was fine. Don't remember why...Alternate ibuprofen and acetaminophen every two to four hours. Go to a doctor for antibiotics to settle it down until you can get to a dentist. I once went to the emergency room and got a local for the tooth and antibiotics. MD's can do that.