Tylenol poisoning is caused by a liver toxin called N-acetyl-p-benzoquinoneimine (NAPQI). Fortunately, when Tylenol is taken correctly, only a small amount of it is converted into this toxin, and that small amount is quickly converted to a harmless molecule that you pass in your urine. That is why Tylenol is very safe anti-pain and anti-fever drug when taken correctly.
When Tylenol is taken in excess, however, the toxin builds up rapidly and wreaks havoc on your liver cells. Not good at all. Believe it or not, Tylenol is the most common cause of acute liver failure resulting in death or liver transplantation in the U.S.! Furthermore, about half of these Tylenol overdoses are unintentional (i.e., not suicide attempts). I have seen this too many times.
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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.