What Medicine Is Used for Fever?
The two medicines most widely used to reduce fever are paracetamol (acetaminophen) and ibuprofen. For most adults and children, either is effective and safe. However, the choice depends on the cause of the fever: for dengue fever, paracetamol is the only safe option — ibuprofen increases bleeding risk. For fever in pregnancy, paracetamol is preferred. For fever with significant muscle pain or inflammation (e.g., flu with muscle aches), ibuprofen may provide more relief. Aspirin should not be used for fever in children under 16 due to Reye's Syndrome risk.
| Situation | Best Choice | Reason |
|---|---|---|
| Dengue fever | Paracetamol ONLY | Ibuprofen increases bleeding risk |
| Flu / COVID-19 | Either (paracetamol first) | Both effective; paracetamol safer for most |
| Children | Paracetamol or ibuprofen (age-dependent) | Ibuprofen from 3 months; aspirin never |
| Pregnancy | Paracetamol | Ibuprofen avoided (esp. 3rd trimester) |
| Kidney disease | Paracetamol | Ibuprofen reduces renal blood flow |
| Stomach ulcer history | Paracetamol | Ibuprofen risks GI bleeding |
| Fever with joint pain | Ibuprofen (if no contraindications) | Anti-inflammatory benefit |
Seek medical care if fever is accompanied by:
- Temperature above 39.5°C (103.1°F) that does not respond to antipyretics
- Fever in a child under 3 months
- Fever lasting more than 3 days in adults, more than 2 days in children
- Stiff neck, severe headache, sensitivity to light — possible meningitis
- Rash (especially petechial — small red/purple spots that do not fade under pressure)
- Difficulty breathing
- Altered consciousness, confusion, seizures
- Return from a tropical country (consider dengue, malaria, typhoid)
Medicine lowers the set-point for body temperature; physical cooling helps the body lose heat. Complementary measures: drink plenty of fluids to replace fever-related sweat losses; wear light clothing; sponging with lukewarm (not cold) water; keep the room cool. Cold baths or ice packs can cause shivering (which generates heat) and are not recommended. Do not layer heavy blankets — this traps heat.
- What is the fastest way to reduce a fever?
- Ibuprofen typically works slightly faster than paracetamol and may be more effective at reducing high fevers in some studies. For maximum effect: take an antipyretic at correct dose with a full glass of fluid; remove heavy clothing; cool the environment. Do not expect temperature to drop to exactly 37°C — a reduction of 1–1.5°C within 1–2 hours is a normal antipyretic response.
- Can you use both paracetamol and ibuprofen together for fever?
- Yes — they can be combined or alternated safely. Some pediatric guidelines recommend alternating every 3–4 hours for high fevers in children unresponsive to a single agent. For adults: taking both simultaneously at correct doses is safe but usually unnecessary if either alone is providing adequate relief.
- Should fever always be treated?
- Not necessarily. Fever is a physiological immune response that can help fight infection. Mild fevers (37.5–38.5°C) without significant discomfort may not require medication. The primary reason to treat fever is patient comfort and to prevent febrile seizures in susceptible young children (between 6 months and 5 years). Treating fever does not speed recovery from most infections.