How long does it take to reduce fever after taking fever-reducing medication?

The time it takes for fever-reducing medication to lower body temperature varies from person to person, but generally falls within the following ranges: 1. Onset of action: Most antipyretic medications begin to take effect between 0.5 to 2 hours after administration. The exact onset time depends on the drug's ingredients and individual differences. 2. Drug absorption: Medications must be absorbed through the gastrointestinal tract and enter the bloodstream before they can work, so the effect is not immediate. 3. Type of medication: For example, ibuprofen typically starts reducing body temperature about 0.5 to 1 hour after intake; acetaminophen (paracetamol) acts more quickly, often producing a noticeable fever-reducing effect within 30 minutes of oral administration. 4. Precautions: If body temperature does not decrease within 4 hours after taking the medication, it is recommended to seek medical attention at a hospital to determine the underlying cause.