Taking too much acetaminophen (Tylenol) can cause serious liver damage. Don't forget that it can be found in more than 600 medications, including prescription drugs and many over-the-counter pain, cold, and cough remedies.
For adults, the daily limit of acetaminophen is equal to six extra-strength Tylenol tablets from all sources combined. Read the ingredients carefully, and follow the directions on the label and your doctor's advice. If you're taking that much Tylenol for more than 2 weeks, talk to your doctor.