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AcetaminophenOver the counter
Pronounced ah-seet-ah-MIN-oh-fen
Brand names: Tylenol
Type: Pain reliever and fever reducer (non-NSAID) · All Pain Relief & Fever Medicines
What Acetaminophen is used for
- Pain relief
- Fever reduction
- Headaches
◆ Kidney note
Usually the preferred simple pain reliever in kidney disease because it does not reduce kidney blood flow like NSAIDs do.
Common side effects
- Nausea
- Rash (rare)
- Generally few side effects at label amounts
Important cautions
- Taking more than the label maximum can cause severe, sometimes fatal, liver damage
- It is hidden in many combination cold, flu, and prescription pain products — check all labels to avoid doubling up
- People with liver disease or heavy alcohol use should ask their care team before using it
How it comes
Tablets, capsules, liquid, suppositories, injection (hospital). This guide lists forms only — it never lists strengths or doses.
Toxicity lists: Acetaminophen also appears on Medicines That Can Harm the Liver.
Related medicines — Pain Relief & Fever Medicines
Please note: This page is a patient-education summary, not medical advice, and it deliberately contains no doses. Medicines affect everyone differently — always follow your own prescription and talk to your doctor or pharmacist before starting, stopping or changing any medicine.