09/29/2025
For many, acetaminophen is their go-to relief for mild to moderate pain, including headaches, muscle aches, and arthritis. It's widely used and safe when taken as directed, but an accidental overdose of acetaminophen can lead to liver damage. Because acetaminophen is found in hundreds of medicines, it's easy to exceed the maximum daily dose without realizing.
This Acetaminophen Dosing Calculator is an educational tool designed to help people understand why following the labeled directions is so important. It shows how one might accidentally exceed 4,000 mg of acetaminophen in a day by taking more than one product that contains acetaminophen or by using too much of one product. https://www.knowyourdose.org/acetaminophen-dosing-calculator/
Acetaminophen is found in more than 500 over-the-counter (OTC) and prescription (Rx) medicines. It’s safe and effective when used as directed, but severe liver damage may occur if you take more than 4,000 milligrams (mg) of acetaminophen in a day. Some medicines have a maximum daily limit that i...