Side Effects of Acetaminophen (Tylenol) Medically reviewed by Zara Risoldi Cochrane, Pharm.D., M.S., FASCP — Written by University of Illinois — Updated on March 31, 2017.

These unwanted side effects are rare if you take acetaminophen occasionally, but if you take it on a regular basis or at a higher dose than recommended, your risk increases.

Tylenol has a variety of uses, including treating fever, muscle pain, and arthritis. It is generally safe to use. However, taking more than 4,000 mg per day can cause serious side effects, such as ...

Reversing the deadly side effects of Tylenol overdose. ScienceDaily. Retrieved June 2, 2025 from www.sciencedaily.com / releases / 2015 / 06 / 150622124713.htm. Duke University.

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Tylenol is more dangerous than these drugs. Tylenol is one of the most dangerous drugs you can take," the husband of Real Housewives of Orange County star Heather Dubrow told Us Weekly . Getty ...

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Advil and Tylenol are each at their best when taken for certain ailments, in part because they work differently in the body and can have different side effects.

These side effects may be temporary, lasting a few days or weeks. But if the side effects last longer than that, bother you, or become severe, be sure to talk with your doctor or pharmacist.