long term acetaminophen side effects
Some of the more severe acetaminophen side effects include: 1  Acute liver toxicity. 2  Allergic reactions including swelling, difficulty breathing, closing of throat, and more. 3  Abdominal pain. 4  Nausea. 5  Unusual bleeding or bruising. 6  Death.
As already mentioned, an overdose of acetaminophen can cause liver damage. This damage occurs in a dose-related manner. (Some other medications can cause liver injury in an unpredictable fashion that is unrelated to the dose.)