Acetaminophen Side Effects
What should I watch for?
Tell your doctor or health care professional if the pain lasts more than 10 days (5 days for children), if it gets worse, or if there is a new or different kind of pain. Also, check with your doctor if a fever lasts for more than 3 days.
Do not take other medicines that contain acetaminophen with this medicine. Always read labels carefully. If you have questions, ask your doctor or pharmacist.
If you take too much acetaminophen get medical help right away. Too much acetaminophen can be very dangerous and cause liver damage. Even if you do not have symptoms, it is important to get help right away.
Common and Rare Side Effects
Along with its needed effects, a medicine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.
Check with your doctor immediately if any of the following side effects occur:
Bloody or black, tarry stools
bloody or cloudy urine
fever with or without chills (not present before treatment and not caused by the condition being treated)
pain in the lower back and/or side (severe and/or sharp)
pinpoint red spots on the skin
sore throat (not present before treatment and not caused by the condition being treated)
sores, ulcers, or white spots on the lips or in the mouth
sudden decrease in the amount of urine
unusual bleeding or bruising
unusual tiredness or weakness
yellow eyes or skin
Other side effects not listed may also occur in some patients. If you notice any other effects, check with your healthcare professional.
Call your doctor for medical advice about side effects. You may report side effects to the FDA at 1-800-FDA-1088.