What is the recommended dosage and frequency of Infant Tylenol (acetaminophen) for a child weighing 6.44 kg?

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Last updated: July 10, 2025View editorial policy

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Infant Tylenol (Acetaminophen) Dosing for a 6.44 kg Child

For a child weighing 6.44 kg, the appropriate dosage of Infant Tylenol (160 mg/5 mL) is 64 mg (2 mL) given every 4-6 hours as needed, not to exceed 5 doses in 24 hours.

Dosage Calculation

The recommended dosage of acetaminophen for infants is based on weight:

  • Standard dosing: 10-15 mg/kg per dose
  • For this 6.44 kg child: 10 mg/kg × 6.44 kg = 64.4 mg (rounded to 64 mg)

Administration Instructions

  • Using the 160 mg/5 mL concentration:
    • 64 mg = 2 mL of the liquid medication
  • Use the dosing syringe or dropper provided with the medication for accurate measurement
  • Administer orally, directly into the side of the child's mouth

Frequency and Maximum Dosing

  • Give every 4-6 hours as needed for fever or pain
  • Do not exceed 5 doses in 24 hours
  • Maximum daily dose: 320 mg/day (64 mg × 5 doses)

Safety Considerations

Important Precautions

  • Always use the measuring device provided with the medication
  • Do not use household spoons as they provide inaccurate dosing
  • Store medication out of reach of children
  • Check the expiration date before administration
  • Do not administer with other acetaminophen-containing products to avoid overdose

When to Seek Medical Attention

  • If fever persists more than 3 days
  • If symptoms worsen or new symptoms develop
  • If the child appears unusually drowsy or lethargic
  • For infants under 3 months with fever, consult a healthcare provider before administering

Alternative Formulations

If using a different concentration of acetaminophen:

  • For 80 mg/0.8 mL concentrated drops: 0.64 mL per dose
  • For 100 mg/mL concentrated drops: 0.64 mL per dose

Remember that accurate dosing is critical for infants to ensure both efficacy and safety. Overdosing acetaminophen can lead to liver damage, while underdosing may not effectively treat fever or pain.

Professional Medical Disclaimer

This information is intended for healthcare professionals. Any medical decision-making should rely on clinical judgment and independently verified information. The content provided herein does not replace professional discretion and should be considered supplementary to established clinical guidelines. Healthcare providers should verify all information against primary literature and current practice standards before application in patient care. Dr.Oracle assumes no liability for clinical decisions based on this content.

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