Most adult Nyquil products contain 650 milligrams of acetaminophen per dose, but formulas vary so you always need to read the Drug Facts label.

Each Excedrin Migraine caplet contains 250 mg of acetaminophen, so the standard 2-caplet dose delivers 500 mg.

Regular Advil products contain 0 mg of acetaminophen; they use ibuprofen only unless the label says “with acetaminophen”.

The safe amount of infant acetaminophen must come from your pediatrician or an official weight-based chart for your baby’s exact weight and product.

Most healthy adults can take up to 1,000 mg of acetaminophen at once, as long as total dose stays under 4,000 mg in 24 hours from all products.

For healthy adults, the 24-hour acetaminophen limit is 4,000 mg total from all sources, and many experts prefer staying at or below 3,000 mg.

For healthy adults, the total acetaminophen dose from all products should not exceed 4,000 mg in 24 hours, and many clinicians favor 3,000 mg or less.

Typical guidance for healthy adults is no more than 1,000 mg per dose and 3,000 to 4,000 mg of acetaminophen total in 24 hours.

Most adults can combine up to 4,000 mg acetaminophen and 1,200 mg ibuprofen in 24 hours if they follow label directions and space doses.

Most adults should stay at or under 4,000 mg of acetaminophen in 24 hours, and many labels set a 3,000 mg cap.