Tylenol® (acetaminophen) is one of the most commonly used fever and pain relievers for babies and children. This infants tylenol dosage guide provides a detailed, weight‑based dosing chart along with practical advice on safe administration. Always consult your pediatrician if you are unsure about dosing or if your child has underlying medical conditions.
Acetaminophen works by reducing fever and relieving minor aches and pains. In infants and children, dosing must be tailored to body weight to ensure efficacy and avoid potential liver toxicity. All infants’ and children’s liquid acetaminophen products now have a standardized concentration of 160 mg per 5 mL. This simplifies dosing but makes it essential to use the correct measuring device.
Weight‑Based Tylenol Dosing Chart
| Weight | Approximate Age | Infants’ Tylenol Oral Suspension | Children’s Tylenol Oral Suspension |
|---|---|---|---|
| 6–11 lbs | 0–3 months | 1.25 mL | — |
| 12–17 lbs | 4–11 months | 2.5 mL | — |
| 18–23 lbs | 12–23 months | 3.75 mL | — |
| 24–35 lbs | 2–3 years | 5 mL (1 tsp) | 5 mL (1 tsp) |
| 36–47 lbs | 4–5 years | — | 7.5 mL (1½ tsp) |
| 48–59 lbs | 6–8 years | — | 10 mL (2 tsp) |
| 60–71 lbs | 9–10 years | — | 12.5 mL (2½ tsp) |
| 72–95 lbs | 11 years | — | 15 mL (3 tsp) |
Important Tylenol Safety Tips
- Tylenol dosage for babies can be confusing as a child grows. Use weight‑based dosing whenever possible. For instance, a 20‑pound (9 kg) toddler would receive 3.75 mL of 160 mg/5 mL suspension.
- Do not exceed five doses in 24 hours. Excess acetaminophen can cause serious liver damage.
- Always check other medications. Many over‑the‑counter cough and cold preparations contain acetaminophen; avoid double dosing.
- Wait at least four hours between doses unless directed otherwise by a healthcare professional.
- Use the provided dosing syringe for infants or the dosing cup for children; household spoons are inaccurate.
When to Call a Doctor
If your child is under three months old, has a fever lasting more than two days, or shows signs of severe illness (difficulty breathing, persistent vomiting, rash, extreme lethargy), consult your pediatrician promptly.
Frequently Asked Questions
For a combined reference that includes both acetaminophen and ibuprofen dosing, see our main dosing charts page. If you plan to alternate Tylenol and Motrin for fever management, consult your pediatrician first.
Download a printable version of the Tylenol chart here.
Disclaimer: This guide is educational and does not replace professional medical advice.