How much Tylenol can I give my child?

The standard dose is **15 mg/kg per dose**, given every **6 hours**, not exceeding *4 doses in 24 hours*. The maximum single dose is *1,000 mg* and the daily maximum is *4,000 mg*. Always use the child's *current weight*, not age, to calculate the dose.

Can I give Tylenol every 4 hours instead of 6?

Some formularies allow dosing every **4–6 hours** at the lower end of the dose range (10 mg/kg). However, **no more than 4 doses** should be given in any 24-hour period. When in doubt, use *6-hour intervals* as the safer default and consult your pharmacist or prescriber.

What is the difference between 120 mg/5 mL and 160 mg/5 mL syrup?

These are **different concentrations** of the same drug. The *120 mg/5 mL* formulation requires a *larger volume* to deliver the same dose. Using the wrong concentration to measure a dose will result in either an under- or overdose — always confirm the concentration printed on the bottle before drawing up.

Is Tylenol safe for infants under 3 months?

Acetaminophen is **not routinely recommended** for infants under 3 months without medical supervision. At this age, fever may indicate a serious infection requiring urgent evaluation, and dosing guidelines differ from those for older children.

Can I alternate Tylenol and ibuprofen?

**Alternating** acetaminophen and ibuprofen is practised in some countries for persistent fever, but it increases the risk of *dosing errors and double-dosing*. Always consult a healthcare professional before combining analgesics, and never give ibuprofen to children under 3 months or with contraindications.

Why should I always check other medications for acetaminophen?

Acetaminophen is present in many **combination cold and flu remedies**. Giving standard Tylenol on top of a combination product can exceed the *safe daily limit*, leading to liver toxicity. Check the ingredient list of every product the child is receiving.

How do I measure small volumes accurately?

Use a **calibrated oral syringe** — not a kitchen teaspoon, which can vary by up to 20%. Withdraw the liquid slowly and check at *eye level*. A 5 mL oral syringe is ideal for doses under 5 mL; a 10 mL syringe for larger doses.

Pediatrics · Analgesic / Antipyretic

Pediatric Tylenol
Calculator

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Important Notice Before Use

Last reviewed: March 2026

This is an educational reference tool only. It does not replace clinical judgment or local guidelines.

Maximum single dose: 1,000 mg. Maximum daily dose: 4,000 mg. Always verify with the treating clinician before administration.

Use specialist guidance for neonates, infants under 3 months, and patients with hepatic impairment.

I understand this is educational and will verify doses clinically.