Weight-based dose for 160 mg / 5 mL oral suspension (15 mg/kg per dose, every 4–6 hours, max 5 doses or 75 mg/kg in 24 hours), a dose log with a next-dose timer, and a label-based safety self-check. Follows the U.S. OTC Drug Facts label rules.
This tool restates the label; it does not prescribe, diagnose, or replace a doctor or pharmacist.
Label rule: if possible, use weight to dose; otherwise use age. Under 12 weeks this tool estimates nothing — ask a doctor.
Measurable dose is rounded down to the nearest 0.1 mL so it never exceeds the computed amount. Use an oral syringe — never a kitchen spoon.
Log each dose you give. The tracker counts doses in the last 24 hours, totals milligrams, and enforces the label rules: minimum 4 hours between doses, no more than 5 doses in 24 hours, and the 24-hour mg cap. Saved on this device only.
Tick anything that applies. This mirrors the OTC label only.
| Active ingredient | Acetaminophen 160 mg per 5 mL oral suspension |
| Who the label covers | Infants and children (dosing by weight; under 24 lb / under 2 years: ask a doctor) |
| Weight-based dose | 15 mg per kg per dose (measurable dose rounded down to 0.1 mL) |
| How often | Repeat every 4 hours while symptoms last (4–6 hour window) |
| Max in 24 hours | No more than 5 doses; no more than 75 mg per kg in 24 hours (whichever is tighter) |
| Per-dose ceiling | Never more than 15 mL (480 mg) per dose — the label chart maximum |
| Under 12 weeks | This tool estimates nothing — ask a doctor first |
| Stop use and ask a doctor | Fever worse or lasting more than 3 days; pain worse or lasting more than 5 days; new symptoms; redness or swelling |
| Ask a doctor before use | If the child has liver disease |
| Ask a doctor or pharmacist before use | If the child is taking the blood-thinning drug warfarin |
| Do not use | If the child is allergic to acetaminophen or any inactive ingredient |
| Combination products | Many cold/flu and pain medicines already contain acetaminophen — never give two at once |
| Old concentrated infant drops | The old 80 mg / 0.8 mL concentrated infant drops were withdrawn in 2011 — do not use old dosing charts; modern Infant's Tylenol is the same 160 mg / 5 mL as Children's |
| Overdose | Get medical help or contact a Poison Control Center right away — do not wait for symptoms |
From the OTC label: if possible, use weight to dose; otherwise use age. Under 24 lb / under 2 years: ask a doctor.
| Weight (lb) | Age (yr) | Dose |
|---|---|---|
| 24–35 | 5 mL (160 mg) | |
| 36–47 | 7.5 mL (240 mg) | |
| 48–59 | 10 mL (320 mg) | |
| 60–71 | 12.5 mL (400 mg) | |
| 72–95 | 15 mL (480 mg) | |
| under 24 | under 2 years | ask a doctor |
| Label point | Acetaminophen (Tylenol) | Ibuprofen (Advil/Motrin) |
|---|---|---|
| Active ingredient | Acetaminophen (Tylenol) | Ibuprofen (Advil/Motrin, NSAID) |
| OTC strength (suspension) | 160 mg per 5 mL | 100 mg per 5 mL |
| Children's weight-based dose | 15 mg/kg per dose (10-15 range), max 75 mg/kg per 24 hours | 10 mg/kg per dose, max 40 mg/kg per 24 hours |
| Dosing interval (children) | Every 4 to 6 hours | Every 6 to 8 hours |
| Max doses in 24 hours (children) | 5 times | 4 times |
| Under-2 weight band label | Under 24 lb: ask a doctor | Under 24 lb: ask a doctor |
| Age gate in this tool | Under 12 weeks: no estimate (ask a doctor) | Under 6 months: no estimate (ask a doctor) |
| Stop-use duration (children) | Fever > 3 days / pain > 5 days: see a doctor | Fever > 3 days / pain > 10 days: see a doctor |
| Key label warning (children) | Many combo products already contain acetaminophen - do not double up | NSAID: stomach-bleeding and kidney warnings; avoid in late pregnancy |
The weight-based estimate is 15 mg per kg per dose, measured from the 160 mg / 5 mL suspension (mL = mg ÷ 32). Example: a 24 lb child → 163.2 mg → 5.1 mL on an oral syringe. The label says to use weight when possible, otherwise age. This is an educational estimate from label rules, not medical advice.
From the OTC label (160 mg / 5 mL): 24–35 lb → 5 mL (160 mg); 36–47 lb → 7.5 mL (240 mg); 48–59 lb → 10 mL (320 mg); 60–71 lb → 12.5 mL (400 mg); 72–95 lb → 15 mL (480 mg). Under 24 lb / under 2 years: ask a doctor. The calculator above shows the label chart row next to the weight-based estimate.
Repeat the dose every 4 hours while symptoms last (the 4–6-hour window), and do not give more than 5 times in 24 hours. The dose log on this page enforces the 4-hour minimum interval and shows the earliest next dose.
Two limits apply and the tighter one wins: no more than 5 doses in 24 hours, and no more than 75 mg per kg in 24 hours. Example: a 24 lb child → max 816.0 mg per 24 hours. Never exceed either limit.
This tool estimates nothing for infants under 12 weeks — ask a doctor first. For children under 24 lb / under 2 years, the label says 'ask a doctor'; the calculator shows the weight-based math but flags it as needing a doctor's confirmation.
Yes, today: the modern Infants' Tylenol label says it is the same 160 mg / 5 mL concentration as Children's Tylenol. Do not use old dosing charts for the concentrated infant drops (80 mg / 0.8 mL), which were withdrawn in 2011 — the numbers are not interchangeable.
They are different drugs with different labels. Children's acetaminophen: 160 mg/5 mL, 15 mg/kg per dose every 4–6 hours, max 75 mg/kg per 24 hours and 5 doses. Children's ibuprofen: 100 mg/5 mL, 10 mg/kg per dose every 6–8 hours, max 40 mg/kg per 24 hours and 4 doses. See the comparison table above and our ibuprofen dosage calculator. This tool does not recommend one over the other — a pharmacist can help you choose.
Per the label: stop use and ask a doctor if fever gets worse or lasts more than 3 days, if pain gets worse or lasts more than 5 days, if new symptoms occur, or if redness or swelling is present — these can be signs of a serious condition.
Check the other product's label first: many cold, flu, and pain combination products already contain acetaminophen. Never give two acetaminophen-containing products at the same time — the 24-hour total across all products is what counts toward overdose.
Use an oral syringe or the enclosed dosing cup — never a kitchen spoon. The suspension is 32 mg per mL, and this tool rounds the measurable volume down to the nearest 0.1 mL so it never exceeds the computed dose. Shake the bottle well before measuring.
Get medical help or contact a Poison Control Center right away — do not wait for signs or symptoms. Quick medical attention is critical even if the child seems fine. Do not give any more until a professional advises you.
No. It is an educational estimate that applies the U.S. OTC Drug Facts label rules (160 mg / 5 mL, 15 mg/kg per dose, every 4–6 hours, max 5 doses or 75 mg/kg per 24 hours, nothing for under 12 weeks) to the doses you log. It does not know your child's health history, other medicines, or conditions. Always follow the label on your package and check with a doctor or pharmacist when unsure.
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