Recommended Maximum Daily Dose for Adults
For healthy adults under 50 weighing at least 150 pounds, the maximum Tylenol (acetaminophen) dose is 4,000 mg per day, taken as no more than 1,000 mg every 4-6 hours or 4,000 mg within 24 hours.[1][2]
How Much Is Safe per Single Dose?
A single dose should not exceed 1,000 mg (two 500 mg tablets or four 250 mg tablets). Space doses at least 4 hours apart to avoid overdose risk.[1][3]
Maximum for Children and Infants
Doses depend on age and weight—use a pediatrician-approved dosing chart. For example:
- Children 6-11 years (36-47 lbs): Up to 480 mg per day.
- Infants 12-23 months (18-23 lbs): Up to 240 mg per day.
Never exceed 5 doses in 24 hours; consult a doctor for exact amounts.[2][4]
What If You're Over 65 or Have Health Issues?
People over 65, or those with liver disease, alcohol use, malnutrition, or kidney problems, should cap at 3,000 mg per day or less. Daily alcohol raises liver toxicity risk even at lower doses.[1][3][5]
Why Does Overdose Happen and What Are the Signs?
Overdose often stems from combining products like cold remedies containing acetaminophen—check labels for total intake. Early signs include nausea, vomiting, and sweating; liver failure can follow within days. Seek emergency care if exceeding limits.[2][5]
When Does the FDA Say to Lower the Limit?
The FDA lowered the adult max from 4,000 mg to 3,000-4,000 mg in 2014 due to liver injury reports, urging label checks.[1][3]
[1]: FDA Consumer Update on Acetaminophen
[2]: Tylenol Official Dosing Chart
[3]: Harvard Health on Acetaminophen Safety
[4]: AAP Acetaminophen Dosing Guidelines
[5]: Mayo Clinic Acetaminophen Overdose