What are the treatments for hyperpyrexia (high fever)?

Medical Advisory BoardAll articles are reviewed for accuracy by our Medical Advisory Board
Educational purpose only • Exercise caution as content is pending human review
Article Review Status
Submitted
Under Review
Approved

Last updated: May 1, 2025View editorial policy

Personalize

Help us tailor your experience

Which best describes you? Your choice helps us use language that's most understandable for you.

From the Guidelines

To bring down a high fever, start by taking over-the-counter medications like acetaminophen (Tylenol) at a dose of 325-650 mg every 4-6 hours (not exceeding 3,000 mg daily) or ibuprofen (Advil, Motrin) at 200-400 mg every 4-6 hours with food, as recommended by various studies 1. When managing high fever, it is essential to consider the patient's overall health and potential risks.

  • Stay hydrated by drinking plenty of fluids such as water, diluted juice, or clear broth.
  • Apply a lukewarm compress to your forehead, neck, or armpits, but avoid cold baths which can cause shivering and actually raise your temperature.
  • Dress in light, breathable clothing and keep room temperature comfortable, around 70°F (21°C).
  • Rest is essential to help your body fight the underlying cause. For children, follow age-appropriate dosing on medication labels, and seek medical attention if your fever exceeds 103°F (39.4°C), lasts more than three days, or is accompanied by severe headache, stiff neck, confusion, difficulty breathing, or rash, as suggested by studies 1. It is crucial to note that fever is your body's natural defense mechanism against infection, raising temperature to kill pathogens, but reducing it can provide comfort while your immune system works, as indicated by the studies 1. Key considerations for managing fever include:
  • Monitoring temperature and adjusting treatment as needed
  • Managing symptoms such as headache and body aches
  • Preventing dehydration and ensuring adequate fluid intake
  • Seeking medical attention if symptoms worsen or if there are concerns about the underlying cause of the fever, as recommended by studies 1.

From the Research

Treatment Options for High Fever

  • The use of antipyretic drugs such as paracetamol and ibuprofen is a common approach to reduce fever 2, 3, 4.
  • A study published in the European review for medical and pharmacological sciences found that paracetamol 1,000 mg and the combination of paracetamol 500 mg/ibuprofen 150 mg were effective in reducing fever in adult patients 2.
  • Another study published in The Pediatric infectious disease journal found that acetaminophen was effective in reducing fever in children with both viral and bacterial infections, with no significant difference in fever response between the two groups 3.
  • However, a literature review published in the British journal of nursing suggested that the use of antipyretic drugs to suppress fever during infection remains a controversial topic, and that the evidence does not currently support routine antipyretic administration 5.

Medication Options

  • Paracetamol (acetaminophen) is a commonly used medication to reduce fever, and can be administered in doses of 1,000 mg every 6 hours 2, 4.
  • Ibuprofen can also be used to reduce fever, and can be administered in combination with paracetamol 2.
  • Acetaminophen, ibuprofen, and naproxen can be used to treat pain and fever associated with upper respiratory infections 6.

Important Considerations

  • The use of antibiotics will not help a viral upper respiratory tract infection, and should only be used to treat bacterial infections 6.
  • The administration of antipyretic drugs should be based on the individual patient's needs and underlying condition, and should take into account potential risks and benefits 5, 4.

References

Guideline

Guideline Directed Topic Overview

Dr.Oracle Medical Advisory Board & Editors, 2025

Research

Treatment of fever and associated symptoms in the emergency department: which drug to choose?

European review for medical and pharmacological sciences, 2023

Research

Fever response to acetaminophen in viral vs. bacterial infections.

The Pediatric infectious disease journal, 1987

Research

Antipyretic drugs in patients with fever and infection: literature review.

British journal of nursing (Mark Allen Publishing), 2019

Research

Coping with upper respiratory infections.

The Physician and sportsmedicine, 2002

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.

Have a follow-up question?

Our Medical A.I. is used by practicing medical doctors at top research institutions around the world. Ask any follow up question and get world-class guideline-backed answers instantly.