Optimal - The Blog
September 10, 2026
Learn how acetaminophen (APAP) can lead to serious liver damage, important safety tips, and what to do in case of overdose. Stay informed for your health.
Liver injury can happen when the body is exposed to certain medications, chemicals, alcohol, or other substances.
One of the most common contributors is acetaminophen, a common pain and fever medicine found in many over-the-counter and prescription products.
A large U.S. poison center review found:
- Reported substance-related liver injury increased greatly between 2000 and 2024
- More than 220,000 exposures were linked with signs of liver cell injury
- Most serious cases required hospital care.
- Acetaminophen by itself was the most common substance linked to liver injury in this review.
While liver injury from combination products containing acetaminophen decreased after safety-related regulatory changes, cases involving acetaminophen alone increased sharply. This may reflect how commonly people rely on nonopioid pain relievers and how easy it can be to take too much without realizing it.
Acetaminophen may appear under different names, including “APAP,” so checking both prescription and over-the-counter products is important.
Anyone who suspects an overdose or develops concerning symptoms after medication use should contact Poison Control or seek medical care promptly.
Important tips include:
- Reading medication labels carefully
- Avoiding use of multiple acetaminophen-containing products at the same time
- Staying within recommended daily limits
- Being cautious with alcohol
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