What is the recommended dose of Tylenol (acetaminophen) for a 5.87 kg infant?

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Last updated: June 17, 2025View editorial policy

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From the Research

The recommended dose of Tylenol (acetaminophen) for a 5.87 kg infant is 44-88 mg every 4-6 hours as needed, not to exceed 5 doses in 24 hours. This is based on the standard dosing of 10-15 mg per kg of body weight, as there is no recent, high-quality study provided that directly addresses the dosing of acetaminophen in infants. For this specific infant, you would calculate the dose by multiplying the weight (5.87 kg) by the dosing range (10-15 mg/kg), resulting in approximately 59-88 mg per dose. Liquid infant Tylenol typically comes in a concentration of 160 mg per 5 mL, so you would give between 1.8-2.8 mL per dose using the measuring device provided with the medication. It's essential to use only the measuring device that comes with the medication to ensure accurate dosing. Always check the product label to confirm the concentration before administering. Acetaminophen works by reducing fever and relieving pain by affecting the parts of the brain that receive pain signals and control body temperature. If the infant's symptoms persist beyond 3 days or worsen, consult a healthcare provider 1.

Some key points to consider when administering acetaminophen to infants include:

  • Always follow the recommended dosage to avoid overdose, which can lead to severe liver damage.
  • Be aware of the concentration of the acetaminophen product you are using, as it may vary.
  • Monitor the infant's symptoms and adjust the dosage as needed, but do not exceed the maximum recommended dose.
  • If you have any concerns or questions, consult a healthcare provider for guidance. Given the provided evidence, none of the studies directly address the recommended dose of acetaminophen for a 5.87 kg infant, but the standard dosing guidelines are widely accepted in clinical practice 2, 1.

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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