How do you bring down fever fast if it’s 102.9?

Hi,

With the use of Tylenol (Acetaminophen).

Information provided from Drugs.com:

Usual Adult Dose for Fever
Doses may be given as a single or repeated dose as follows:

Parenteral:
Weight 50 kg or greater: 1000 mg IV every 6 hours OR 650 mg IV every 4 hours
Maximum Single Dose: 1000 mg
Minimum Dosing Interval: every 4 hours
Maximum Dose: 4000 mg per 24 hours

Weight less than 50 kg: 15 mg/kg IV every 6 hours OR 12.5 mg/kg IV every 4 hours
Maximum Single Dose: 15 mg/kg
Minimum Dosing Interval: every 4 hours
Maximum Dose: 75 mg/kg per 24 hours

Oral:
Immediate-release: 325 mg to 1 g orally every 4 to 6 hours
Minimum Dosing Interval: every 4 hours
Maximum Single Dose: 1000 mg
Maximum Dose: 4000 mg per 24 hours

Extended-Release: 1300 mg orally every 8 hours
Maximum dose: 3900 mg per 24 hours

Rectal:
650 mg rectally every 4 to 6 hours
Maximum dose: 3900 mg per 24 hours

Comments:

Maximum daily dose is based on all routes of administration and all products containing acetaminophen.
Maximum daily dose and dosing recommendations may differ by product; some manufacturers have decreased the maximum daily dose to protect consumers from inadvertent overdoses.
For IV administration, verify the dose in mg and mL to ensure the dose is correct; verify that infusion pumps are properly programmed

Uses:
For the management of mild to moderate pain and the management of moderate to severe pain with adjunctive opioid analgesics.
For the reduction of fever.

Source: https://www.drugs.com/dosage/acetaminophen.html#Usual_Adult_Dose_for_Fever

Usual Pediatric Dose for Fever
Doses may be given as a single or repeated dose as follows:

PARENTERAL:
Neonates (including those premature neonates born at 32 weeks gestational age or later, up to 28 days chronological age): 12.5 mg/kg IV every 6 hours
Minimum Dosing Interval: 6 hours
Maximum Daily Dose: 50 mg/kg/day

Infants (29 days to 2 years old): 15 mg/kg every 6 hours
Minimum Dosing Interval: 6 hours
Maximum Daily Dose: 60 mg/kg/day

Age: 2 to 12 years: 12.5 mg/kg IV every 4 hours OR 15 mg/kg IV every 6 hours
Maximum Single Dose: 15 mg/kg; not to exceed 750 mg
Minimum Dosing Interval: every 4 hours
Maximum Daily Dose: 75 mg/kg in 24 hours; not to exceed 3750 mg

Age: 13 years or older; weight less than 50 kg: 12.5 mg/kg IV every 4 hours OR 15 mg/kg IV every 6 hours
Maximum Single Dose: 15 mg/kg; not to exceed 750 mg
Minimum Dosing Interval: every 4 hours
Maximum Daily Dose: 75 mg/kg in 24 hours; not to exceed 3750 mg

Age: 13 years or older; weight 50 kg or greater: 650 mg IV every 4 hours OR 1000 mg IV every 6 hours
Maximum Single Dose: 1000 mg
Minimum Dosing Interval: every 4 hours
Maximum Daily Dose: 4000 mg in 24 hours

ORAL: 10 to 15 mg/kg orally every 4 to 6 hours as needed not to exceed 5 doses in 24 hours

Alternatively, use weight first, then age:
Weight: 2.7 to 5.3 kg (0 to 3 months): 40 mg orally every 4 hours as needed not to exceed 5 doses in 24 hours
Weight: 5.4 to 8.1 kg (4 to 11 months): 80 mg orally every 4 hours as needed not to exceed 5 doses in 24 hours
Weight: 8.2 to 10.8 kg (12 to 23 months): 120 mg orally every 4 hours as needed not to exceed 5 doses in 24 hours
Weight: 10.9 to 16.3 kg (2 to 3 years): 160 mg orally every 4 hours as needed not to exceed 5 doses in 24 hours
Weight: 16.4 to 21.7 kg (4 to 5 years): 240 mg orally every 4 hours as needed not to exceed 5 doses in 24 hours
Weight: 21.8 to 27.2 kg (6 to 8 years): 320 mg orally every 4 hours as needed not to exceed 5 doses in 24 hours
Weight: 27.3 to 32.6 kg (9 to 10 years): 400 mg orally every 4 hours as needed not to exceed 5 doses in 24 hours
Weight: 32.7 to 43.2 kg (11 to 12 years): 480 mg orally every 4 hours as needed not to exceed 5 doses in 24 hours

12 years or older:
Immediate-release: 325 mg to 1 g orally every 4 to 6 hours
Minimum Dosing Interval: every 4 hours
Maximum Single Dose: 1000 mg
Maximum Dose: 4000 mg per 24 hours

RECTAL:
Age: 6 to 11 months: 80 mg rectally every 6 hours up to a maximum of 4 doses in 24 hours
Age: 12 to 36 months: 80 mg rectally every 4 to 6 hours up to a maximum of 5 doses in 24 hours
Age: 3 to 6 years: 120 mg rectally every 4 to 6 hours up to a maximum of 5 doses in 24 hours
Age: 6 to 12 years: 325 mg rectally every 4 to 6 hours up to a maximum of 5 doses in 24 hours
Age: 75012 years or older: 650 mg rectally every 4 to 6 hours up to a maximum of 6 doses in 24 hours

Comments:
Maximum daily dose is based on all routes of administration and all products containing acetaminophen.
Maximum daily dose and dosing recommendations may differ by product; some manufacturers have decreased the maximum daily dose to protect consumers from inadvertent overdoses.
For IV administration, verify the dose in mg and mL to ensure the dose is correct; verify that infusion pumps are properly programmed.

Use: For the reduction of fever.

Source: https://www.drugs.com/dosage/acetaminophen.html#Usual_Pediatric_Dose_for_Fever

Warnings
You should not use Tylenol if you have severe liver disease.

An overdose of acetaminophen can damage your liver or cause death.

Adults and teenagers who weigh at least 110 pounds should not take more than 1000 milligrams (mg) at one time, or more than 4000 mg in 24 hours.

Children younger than 12 years old should not take more than 5 doses in 24 hours, using only the number of milligrams per dose that is recommended for the child's weight and age. Use exactly as directed on the label.

Avoid also using other medicines that contain acetaminophen (sometimes abbreviated as APAP), or you could have a fatal overdose.

Call your doctor at once if you have nausea, pain in your upper stomach, itching, loss of appetite, dark urine, clay-colored stools, or jaundice (yellowing of your skin or eyes).

Stop taking Tylenol and call your doctor right away if you have skin redness or a rash that spreads and causes blistering and peeling.

Source: https://www.drugs.com/tylenol.html

Drink plenty of fluids, use ice packs, or a wet cloth on applied on the forehead.

Regards, masso