The standard adult dose of Tylenol (acetaminophen) is 325 to 1,000 milligrams every four to six hours, with an absolute maximum of 4,000 milligrams in 24 hours. For Tylenol Extra Strength, the maximum is lower: 3,000 milligrams per day. The right dose depends on which product you’re using, your age, your weight (for children), and whether you’re taking any other medications that also contain acetaminophen.
Adult Dosage for Regular and Extra Strength
Regular Strength Tylenol comes in 325 mg tablets. The typical dose is two tablets (650 mg) every four to six hours as needed. You can take up to a maximum of 4,000 mg in a 24-hour period, which works out to about 12 tablets spread across the day.
Extra Strength Tylenol comes in 500 mg tablets or gelcaps. The typical dose is two tablets (1,000 mg) every six hours. The daily cap for Extra Strength is 3,000 mg, or six tablets total in 24 hours. That lower ceiling exists because each individual dose is larger, and it’s easier to accidentally take too much.
The key rule for both versions: never double up on doses if you miss one, and always wait the full interval (four hours for regular, six hours for extra strength) before taking the next dose.
Dosage for Children
Children’s doses are based on weight, not age. If you know your child’s weight, use that. Age is only a rough backup when weight isn’t available.
Children’s liquid acetaminophen comes in a standardized concentration of 160 mg per 5 mL. This applies to both infant drops and children’s liquid, since manufacturers voluntarily aligned the concentrations to prevent dangerous mix-ups. (Older bottles of infant drops used a much more concentrated formula, 80 mg per 0.8 mL, so if you have an old bottle in the medicine cabinet, discard it.)
For children under 12, the dose can be given every four hours while symptoms last, up to five doses in 24 hours. Children 12 and older can take Extra Strength tablets every six hours, with a maximum of six tablets in 24 hours. A few important age restrictions to keep in mind:
- Under 2 years: Do not give acetaminophen without guidance from a pediatrician.
- Under 12 years: Do not give 500 mg Extra Strength products.
- Under 18 years: Do not give 650 mg extended-release products.
Measuring Liquid Doses Accurately
An oral syringe is the most accurate way to measure liquid acetaminophen for a child. For older children, the dosing cup that comes with the bottle is acceptable. Never use a kitchen teaspoon or tablespoon. Kitchen spoons vary widely in size and can easily deliver the wrong amount. For children under 6, it’s also best to avoid combination medicines that contain acetaminophen alongside other active ingredients, since tracking the total acetaminophen becomes harder.
Hidden Acetaminophen in Other Medications
The most common way people exceed the daily limit isn’t by taking too many Tylenol tablets. It’s by taking Tylenol alongside another product that also contains acetaminophen without realizing it. Acetaminophen is an ingredient in hundreds of over-the-counter and prescription products: cold and flu remedies, sleep aids, allergy medications, and prescription painkillers. The FDA’s 4,000 mg daily maximum applies to all acetaminophen from every source combined, not just what comes from the Tylenol bottle. Before taking Tylenol, check the active ingredients on every other medication you’re currently using.
Alcohol, Liver Health, and Lower Limits
Acetaminophen is processed by the liver, and exceeding the recommended dose can cause serious liver damage. If you drink three or more alcoholic beverages a day, your risk of liver injury from acetaminophen increases, and most product labels recommend talking to a doctor before using it at all.
For people with existing liver disease such as cirrhosis, research suggests that short-term use of 2 to 3 grams per day (well below the standard maximum) does not appear to increase the risk of acute liver problems. But that doesn’t mean it’s risk-free. If you have liver disease, staying at or below 2 grams per day and using it for only a few days at a time is the more cautious approach, and worth discussing with your doctor.
Signs You’ve Taken Too Much
Acetaminophen overdose is deceptive. In the first several hours, you might feel fine or have only mild nausea and vomiting. Symptoms of liver damage, including pain in the upper right abdomen, dark urine, and yellowing of the skin or eyes, can take 24 to 72 hours to appear. By that point, significant damage may already be underway. If you suspect you’ve exceeded the daily maximum or accidentally doubled a dose, contact Poison Control (1-800-222-1222) or seek emergency care immediately, even if you feel normal. Early treatment is far more effective than waiting for symptoms to develop.