What are the signs that I’ve taken too much Tylenol?

Reviewed by Yoshinori Abe, MD

Internal Medicine

Tylenol overdose symptoms include nausea, vomiting, stomach pain, loss of appetite, sweating, and fatigue. In severe cases, an overdose can cause serious liver damage, jaundice, confusion, or even liver failure. Symptoms may not appear right away, sometimes taking 12–24 hours to develop, which makes overdose especially dangerous. If you suspect a Tylenol overdose, seek emergency medical care immediately.

Because acetaminophen toxicity can mimic other conditions and symptoms may be delayed, understanding what you're experiencing is critical. Take a free, instant, online symptom check to clarify your symptoms and confidently navigate your next steps.

Reviewed for medical accuracy: 07/20/2026

Important Next Steps

Learn if acetaminophen overdose is possible Discover likely causes of these symptoms See if you need urgent care today Find OTC options for acetaminophen symptoms Find a doctor for poison treatment Discover safe home remedies for symptoms Understand your symptoms with an online check

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Explanation

Taking too much Tylenol, also known as acetaminophen, can be dangerous. Early signs of an overdose often include feelings of nausea, vomiting, and pain in the upper right side of the stomach. You might also feel tired or lose your appetite.

If the overdose is severe, it can cause serious liver damage. Later signs of liver damage may include yellowing of the skin or eyes (called jaundice), confusion, and even a coma. It's very important to get help quickly if you think you or someone else has taken too much Tylenol.

Here are some key points to remember:

Early Symptoms: Nausea, vomiting, stomach pain, tiredness, and loss of appetite.
Severe Symptoms: Yellow skin/eyes, confusion, and possible coma.

If you suspect an overdose, contact emergency services or go to a hospital immediately. If you're experiencing concerning symptoms and aren't sure whether they're related to medication use, you can use this free symptom checker to help assess your condition. Timely treatment is crucial to prevent serious health problems.

(References)

Chidiac AS, Buckley NA, Noghrehchi F, & Cairns R. (2023). Paracetamol (acetaminophen) overdose and hepatotoxicity. Expert opinion on drug metabolism & toxicology, 37436926.
Fisher ES, & Curry SC. (2019). Evaluation and treatment of acetaminophen toxicity. Advances in pharmacology (San Diego, Calif.), 31307590.
Hodgman MJ, & Garrard AR. (2012). A review of acetaminophen poisoning. Critical care clinics, 22998987.

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