What is the usual acetaminophen (paracetamol) dose for adults?
For most adults, the common dosing is 650 mg to 1,000 mg by mouth every 4 to 6 hours as needed for pain or fever. [1]
How much can an adult take in 24 hours?
Do not exceed 3,000 mg (3 g) in 24 hours of acetaminophen from all sources. [2]
What’s the maximum single dose?
A typical maximum single dose is 1,000 mg at a time. [1]
How should dosage change if I have liver problems or drink alcohol?
Lower limits may be needed. If you have liver disease or regular heavy alcohol use, you should ask a clinician before using acetaminophen and often should keep daily totals well below the usual maximum. [2]
Can I combine acetaminophen with other cold/flu medicines?
Many cold/flu products also contain acetaminophen. Check labels to avoid taking duplicates, which is a common cause of accidental overdose. [2]
What if I miss a dose or take too much?
If you take more than directed, stop taking additional acetaminophen and seek urgent medical advice—acetaminophen overdose can cause delayed, serious liver injury. [2]
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Sources
[1] https://www.nhs.uk/medicines/paracetamol/
[2] https://www.fda.gov/drugs/infographics/acetaminophen-and-liver-injury