What is the maximum Tylenol (acetaminophen) dose you can take at one time?
For most adults, the maximum single dose is 1,000 mg (1 gram) of acetaminophen, which is the amount in two Extra-Strength 500 mg tablets. [1]
How does the “max per day” limit work?
Even if a single dose is 1,000 mg, adults should not exceed 3,000 mg (3 grams) in 24 hours unless a clinician specifically tells you otherwise. [1]
What if you have liver disease, drink alcohol, or are underweight?
If you have liver disease, drink significant amounts of alcohol, or have other liver risk factors, the safe limits can be lower. In these cases, you should ask a clinician or pharmacist for a personalized maximum dose because acetaminophen can cause serious liver injury when totals are too high. [1]
What happens if you take more than the max in one dose?
Taking too much acetaminophen can lead to liver damage that may not show symptoms right away. If someone may have exceeded the maximum dose, seek urgent medical help immediately (Poison Control in the U.S.: 1-800-222-1222). [1]
How to avoid accidentally doubling your dose
Many cold/flu, pain, and nighttime products also contain acetaminophen. Check the active ingredient list so you don’t add multiple products that all contain the same drug. [1]
Quick safety check based on common tablet strengths
If you’re using the common label strengths:
- Regular Strength: typically 325 mg per tablet
- Extra Strength: typically 500 mg per tablet
- Max single dose for adults: 1,000 mg, meaning 2 Extra Strength 500 mg tablets at once. [1]
Sources
1. Drug information on acetaminophen (Tylenol) dosing and daily limits (Tylenol label/dosing guidance): https://www.drugs.com/acetaminophen.html