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Q: My 31kg child has Influenza A and a persistent fever. Can I increase the fever reducer dosage?

Medically reviewed by Sang Hyun Ahn, MD

Content edited by Myeongchan Kim, MD


This post is a dramatization of a question and answer session experienced by our actual medical reviewers. Please note that this content is for informational purposes only and does not constitute medical advice. Always consult with a qualified healthcare professional for any health concerns or before making any decisions related to your health or treatment.


Question:

My child was diagnosed with Influenza A today, and their fever is not going down. My child weighs 31 kg. I am currently giving 12.5 ml of acetaminophen and 15.5 ml of dexibuprofen, but the body temperature consistently stays above 38.5°C. My child is having a really hard time. Up to what dosage can I safely increase the medication? Also, how many days does a fever usually last with the flu?


Answer:

It is always heartbreaking to see your child struggling with the flu. Here is the medical guidance regarding your child's fever reducer dosages and the expected course of Influenza A.


Current Dosage Check (for a 31 kg child):

  • Acetaminophen: You are currently giving 12.5 ml. You can safely increase this up to a maximum of 15 ml (480 mg) per dose.

  • Dexibuprofen: The current dose of 15.5 ml is the appropriate dosage for your child's weight. Do not increase this further.


How to Manage and Adjust Medications:

  • You may increase the acetaminophen dose to 15 ml.

  • Cross-medication: To better control the fever, you can alternate between the two medications every 3 hours. (For example: 9:00 AM Acetaminophen → 12:00 PM Dexibuprofen → 3:00 PM Acetaminophen → 6:00 PM Dexibuprofen).

  • Please strictly adhere to the maximum daily frequency for each medication: Acetaminophen can be given up to 5 times a day, and Dexibuprofen up to 4 times a day.


Expected Fever Duration for Influenza A:

  • A high fever typically lasts for 3 to 5 days.

  • The first 2 to 3 days are usually the most severe.

  • If your doctor prescribed an antiviral medication (such as Tamiflu), taking it as directed can shorten the fever duration by 1 to 2 days.


Additional At-Home Care:

  • Hydration: Ensure your child drinks plenty of fluids (warm water or electrolyte/sports drinks) to prevent dehydration.

  • Environment: Dress the child in light, breathable clothing and maintain a comfortable indoor room temperature around 24-26°C (75-79°F).

  • Rest: Plenty of rest is the most important factor for a full recovery.


When to Seek Immediate Medical Attention:

Please visit the hospital or emergency room immediately if your child exhibits any of the following warning signs:

  • Difficulty breathing or rapid breathing

  • Chest pain

  • Signs of severe dehydration (no tears when crying, no urination for over 8 hours, severe lethargy)

  • High fever that persists for more than 5 days


The flu is a tough illness, but with consistent management, plenty of fluids, and rest, your child will recover soon.


For extra peace of mind and clear guidance when tracking your child's symptoms, the FeverCoach app is always there to help.







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