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Safety and Pharmacokinetic (PK) Study of Intravenous (IV) Acetaminophen Administration in Pediatric Inpatients

A Prospective, Multi-Center, Randomized, Open-Label, Single and Repeated Dose, 48 Hour Study, of Intravenous Acetaminophen in Pediatric Inpatients to Determine Pharmacokinetics (PK) and Safety in Acute Pain and Fever

Status
Completed
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT00493246
Enrollment
75
Registered
2007-06-28
Start date
2007-06-30
Completion date
2008-11-30
Last updated
2016-10-21

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Fever, Pain

Brief summary

We are doing this study to find out what happens to acetaminophen in the body after it is given to children through the vein. Children's bodies may handle drugs differently than adults. Understanding how long the drug stays in the body and how the drug is changed or metabolized by the body (called pharmacokinetics) is an important step in learning what the best dose of acetaminophen for children should be. We are also interested in learning about the safety of this medication when given to children.

Detailed description

A Prospective, Multi-Center, Randomized, Open-Label, Single and Repeated Dose, 48 Hour Study, of Intravenous Acetaminophen in Pediatric Inpatients to Determine Pharmacokinetics (PK) and Safety in Acute Pain and Fever

Interventions

DRUGIV Acetaminophen

This study will investigate two doses (12.5 milligrams/kilogram (mg/kg) and 15 milligrams/kilogram) based on weight administered every four hours (q4h), every six hours (q6h), or every eight hours (q8h) (depending on age) Neonates: 12.5 mg/kg q6h IV acetaminophen Neonates: 15 mg/kg q8h IV acetaminophen Infants: 12.5 mg/kg q4h IV acetaminophen Infants: 15 mg/kg q6h IV acetaminophen Children: 12.5 mg/kg q4h IV acetaminophen Children: 15 mg/kg q6h IV acetaminophen Adolescents: 12.5 mg/kg q4h IV acetaminophen Adolescents: 15 mg/kg q6h IV acetaminophen

Sponsors

Mallinckrodt
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
29 Days to 16 Years
Healthy volunteers
No

Inclusion criteria

To be eligible for entry into the Study, Subjects must meet or Subjects' Parent or Guardian must meet, agree with or confirm all of the following criteria: 1. Provide written Informed Consent/Assent prior to participation in the Study 2. Age strata: * Full-term Neonates (≤ 28 days old and minimum post conception age of 37 weeks at birth) * Infants \[29 days to \<2 years (yrs) old\] * 29 days to \<6 months * 6 to \<12 months * 12 to \<24 months) * Children (2 yrs to \<12 yrs old) * Adolescents (12 yrs to ≤16 yrs old) 3. Inpatient status: are currently inpatients or have an admission scheduled and will soon become an inpatient (e.g., elective surgery) 4. Diagnosis: requires or will require analgesic treatment for acute pain or antipyretic treatment for fever 5. IV access: have a need for IV access for the duration of the Study either due to a nothing by mouth (NPO) status or due to the Investigator's assessment that oral treatment is not optimal (for example, severe nausea or vomiting) 6. The Subject's Parent/Guardian must have the ability to read and understand the Study procedures and have the ability to communicate meaningfully with the Study Investigator and staff 7. Be free of other physical, mental, or medical conditions which, in the opinion of the Investigator after completing the screening assessment, make Study participation inadvisable 8. If a female of child bearing potential, have a negative pregnancy test

Exclusion criteria

(Screening) A Subject is NOT eligible for entry if ANY of the following criteria are met: 1. Is not able to comply with the plasma sampling requirements of the Study 2. Has known or suspected hypersensitivity to acetaminophen or the inactive excipients of IV Acetaminophen. 3. Has been taking any acetaminophen-containing product in the 12 hours prior or any of the following in the 48 hours prior to randomization in the Study: probenecid, disulfiram, isoniazide, St. John's wort, skullcap, chaparral, comfrey, germander, jin bu huan, kava, pennyroyal, and valerian 4. Has any significant medical condition that in the opinion of the Investigator contraindicates participation in the Study 5. Has impaired liver function, with evidence of clinically significant liver disease, or other condition that may suggest the potential for an increased susceptibility to hepatic toxicity with IV APAP exposure. For this criterion, a total bilirubin greater than 1.5 times upper limit of normal (ULN) for age or an Alanine aminotransferase (ALT) serum glutamic pyruvic transaminase (SGPT) or Aspartate transaminase (AST) serum glutamic oxaloacetic transaminase (SGOT) greater than 2.5 times ULN for age will be deemed as evidence of clinically significant (Common Terminology Criteria for Adverse Events \[CTCAE\] Grade 2) liver dysfunction or disease. 6. Has significantly impaired renal function or known significant renal disease, as evidenced by an estimated glomerular filtration rate (using the Schwartz formula) calculated to be less than 1/3rd of normal for the applicable age strata 7. Has participated in another interventional clinical Study (investigational or marketed product) within 30 days of the planned Study randomization date

Design outcomes

Primary

MeasureTime frameDescription
Single-dose Maximum Plasma Concentration (Cmax) , Micrograms Per Milliliter (µg/mL) Pharmacokinetics of IV AcetaminophenTime Zero (just prior to first dose) to 24 hours post first doseCmax: Maximum Plasma Concentration
Single-dose Time to Reach Maximum Plasma Concentration [Tmax(h)] Pharmacokinetics of IV AcetaminophenTime Zero (just prior to first dose) to 24 hours post first doseTmax: Time to reach maximum plasma concentration (Cmax)
Multiple-dose Area Und the Curve (AUC) From Time 0 (Predose) to the Time of the Dosing Interval at Steady-state (0-t (µg*h/ml) Pharmacokinetics of IV AcetaminophenTime Zero (just prior to first dose) to 48 hours post first doseAUC 0-t (µg\*h/ml): Area under the plasma concentration versus time curve from time 0 (predose) to the time of the dosing interval at steady-state.
Multiple-dose Terminal Elimination Half-life [t1/2(h)] Pharmacokinetics of IV Acetaminophen48hrst1/2: Terminal elimination half-life

Secondary

MeasureTime frameDescription
Number of Subjects Reporting at Least One Treatment-Emergent Adverse Event (TEAE)First dose of study medication to 30 days after the last dose of study medicationA TEAE is defined as an adverse event that starts on or after the start of study medication
Subjects Who Experience at Least One Serious Treatment-Emergent Adverse Event (TEAE)First dose to 30 days following last dose of study medicationA Serious Treatment Emergent Adverse Event is defined as any untoward medical occurrence at any dose of IV acetaminophen that; Results in Death, Is life-threatening, Requires inpatient hospitalization or causes prolongation of existing hospitalization, Results in persistent or significant disability/incapacity, Is a congenital anomaly/birth defect, Is an important medical event

Countries

United States

Participant flow

Recruitment details

The study was conducted at 5 sites in the US from 27 June 2007 to 01Sep 2008.

Participants by arm

ArmCount
Neonates:12.5 mg/kg Every 6 Hours (q6h) IV Acetaminophen
Full term neonates, 12.5 milligram(mg)per kilogram (kg) IV acetaminophen administered every 6 hours (q6h) (max daily dose of 50 mg/kg)
2
Neonates: 15 mg/kg Every 8 Hours (q8h) IV Acetaminophen
Full term neonates, 15 milligrams (mg)/kilogram (kg) Intravenous(IV) acetaminophen administered every 8 hours (q8h) (max daily dose of 50 mg/kg)
1
Infants: 12.5 mg/kg q4h IV Acetaminophen
Infants aged 29days to less than 24months received IV acetaminophen 12.5 mg/kg every 4 hours (q4h)(maximum of 660 mg/dose). Total maximum daily dose is 75 mg/kg or 4 grams, whichever is less.
12
Infants:15 mg/kg Every 6 Hours (q6h) IV Acetaminophen
Infants aged 29days to less than 24months received IV acetaminophen 15 mg/kg every 6 hours (maximum dose of 1 gram) Total maximum daily dose is 75 mg/kg or 4 grams, whichever is less.
13
Children: 12.5 mg/kg Every 4 Hours (q4h) IV Acetaminophen
Children aged 2 years to less than 12 years received IV acetaminophen 12.5 mg/kg every 4 hours(maximum of 660 mg/dose). Total maximum daily dose is 75 mg/kg or 4 grams, whichever is less.
9
Children: 15 mg/kg Every 6 Hours(q6h) IV Acetaminophen
Children aged 2 years to less than 12 years received IV acetaminophen 15 mg/kg every 6 hours (maximum dose of 1 gram) Total maximum daily dose is 75 mg/kg or 4 grams, whichever is less.
16
Adolescents: 12.5 mg/kg Every 4 Hours (q4h) IV Acetaminophen
Adolescents aged 12 years to less than or equal to 16 years received IV acetaminophen 15 mg/kg every 6 hours (maximum dose of 1 gram) Total maximum daily dose is 75 mg/kg or 4 grams, whichever is less.
12
Adolescents:15 mg/kg Every 6 Hours (q6h) IV Acetaminophen
Adolescents aged 12 years to less than or equal to 16 years received IV acetaminophen 15 mg/kg every 6 hours (maximum dose of 1 gram) Total maximum daily dose is 75 mg/kg or 4 grams, whichever is less.
10
Total75

Withdrawals & dropouts

PeriodReasonFG000FG001FG002FG003FG004FG005FG006FG007
Overall StudyLost to Follow-up00000010
Overall StudyNo access to draw blood00000100
Overall StudyWithdrawal by Subject00001000

Baseline characteristics

CharacteristicNeonates:12.5 mg/kg Every 6 Hours (q6h) IV AcetaminophenNeonates: 15 mg/kg Every 8 Hours (q8h) IV AcetaminophenInfants: 12.5 mg/kg q4h IV AcetaminophenInfants:15 mg/kg Every 6 Hours (q6h) IV AcetaminophenChildren: 12.5 mg/kg Every 4 Hours (q4h) IV AcetaminophenChildren: 15 mg/kg Every 6 Hours(q6h) IV AcetaminophenAdolescents: 12.5 mg/kg Every 4 Hours (q4h) IV AcetaminophenAdolescents:15 mg/kg Every 6 Hours (q6h) IV AcetaminophenTotal
Age, Categorical
<=18 years
2 Participants1 Participants12 Participants13 Participants9 Participants16 Participants12 Participants10 Participants75 Participants
Age, Categorical
>=65 years
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Age, Categorical
Between 18 and 65 years
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Sex: Female, Male
Female
1 Participants1 Participants4 Participants7 Participants4 Participants6 Participants2 Participants6 Participants31 Participants
Sex: Female, Male
Male
1 Participants0 Participants8 Participants6 Participants5 Participants10 Participants10 Participants4 Participants44 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
EG003
affected / at risk
EG004
affected / at risk
EG005
affected / at risk
EG006
affected / at risk
EG007
affected / at risk
deaths
Total, all-cause mortality
— / —— / —— / —— / —— / —— / —— / —— / —
other
Total, other adverse events
2 / 21 / 110 / 127 / 131 / 910 / 1610 / 125 / 10
serious
Total, serious adverse events
0 / 20 / 10 / 121 / 131 / 92 / 161 / 121 / 10

Outcome results

Primary

Multiple-dose Area Und the Curve (AUC) From Time 0 (Predose) to the Time of the Dosing Interval at Steady-state (0-t (µg*h/ml) Pharmacokinetics of IV Acetaminophen

AUC 0-t (µg\*h/ml): Area under the plasma concentration versus time curve from time 0 (predose) to the time of the dosing interval at steady-state.

Time frame: Time Zero (just prior to first dose) to 48 hours post first dose

ArmMeasureValue (MEDIAN)
Neonates:12.5 mg/kg Every 6 Hours (q6h) IV AcetaminophenMultiple-dose Area Und the Curve (AUC) From Time 0 (Predose) to the Time of the Dosing Interval at Steady-state (0-t (µg*h/ml) Pharmacokinetics of IV Acetaminophen65.6 µg*h/ml
Neonates: 15 mg/kg Every 8 Hours (q8h) IV AcetaminophenMultiple-dose Area Und the Curve (AUC) From Time 0 (Predose) to the Time of the Dosing Interval at Steady-state (0-t (µg*h/ml) Pharmacokinetics of IV Acetaminophen105 µg*h/ml
Infants: 12.5 mg/kg q4h IV AcetaminophenMultiple-dose Area Und the Curve (AUC) From Time 0 (Predose) to the Time of the Dosing Interval at Steady-state (0-t (µg*h/ml) Pharmacokinetics of IV Acetaminophen43.3 µg*h/ml
Infants:15 mg/kg Every 6 Hours (q6h) IV AcetaminophenMultiple-dose Area Und the Curve (AUC) From Time 0 (Predose) to the Time of the Dosing Interval at Steady-state (0-t (µg*h/ml) Pharmacokinetics of IV Acetaminophen51.9 µg*h/ml
Children: 12.5 mg/kg Every 4 Hours (q4h) IV AcetaminophenMultiple-dose Area Und the Curve (AUC) From Time 0 (Predose) to the Time of the Dosing Interval at Steady-state (0-t (µg*h/ml) Pharmacokinetics of IV Acetaminophen37.8 µg*h/ml
Children: 15 mg/kg Every 6 Hours(q6h) IV AcetaminophenMultiple-dose Area Und the Curve (AUC) From Time 0 (Predose) to the Time of the Dosing Interval at Steady-state (0-t (µg*h/ml) Pharmacokinetics of IV Acetaminophen48.0 µg*h/ml
Adolescents: 12.5 mg/kg Every 4 Hours (q4h) IV AcetaminophenMultiple-dose Area Und the Curve (AUC) From Time 0 (Predose) to the Time of the Dosing Interval at Steady-state (0-t (µg*h/ml) Pharmacokinetics of IV Acetaminophen47.7 µg*h/ml
Adolescents:15 mg/kg Every 6 Hours (q6h) IV AcetaminophenMultiple-dose Area Und the Curve (AUC) From Time 0 (Predose) to the Time of the Dosing Interval at Steady-state (0-t (µg*h/ml) Pharmacokinetics of IV Acetaminophen64.0 µg*h/ml
Primary

Multiple-dose Terminal Elimination Half-life [t1/2(h)] Pharmacokinetics of IV Acetaminophen

t1/2: Terminal elimination half-life

Time frame: 48hrs

Population: Subjects who received at least one dose of IV acetaminophen and had at least 3 PK sampling assessments were included in the PK analysis.This outcome measure represents PK parameters for the last dose of IV acetaminophen.~Due to only one subject in the Neonate 15mg/kg group, t1/2 (h) was not calculated.

ArmMeasureValue (MEDIAN)
Neonates:12.5 mg/kg Every 6 Hours (q6h) IV AcetaminophenMultiple-dose Terminal Elimination Half-life [t1/2(h)] Pharmacokinetics of IV Acetaminophen3.88 Hours
Infants: 12.5 mg/kg q4h IV AcetaminophenMultiple-dose Terminal Elimination Half-life [t1/2(h)] Pharmacokinetics of IV Acetaminophen2.37 Hours
Infants:15 mg/kg Every 6 Hours (q6h) IV AcetaminophenMultiple-dose Terminal Elimination Half-life [t1/2(h)] Pharmacokinetics of IV Acetaminophen2.79 Hours
Children: 12.5 mg/kg Every 4 Hours (q4h) IV AcetaminophenMultiple-dose Terminal Elimination Half-life [t1/2(h)] Pharmacokinetics of IV Acetaminophen2.64 Hours
Children: 15 mg/kg Every 6 Hours(q6h) IV AcetaminophenMultiple-dose Terminal Elimination Half-life [t1/2(h)] Pharmacokinetics of IV Acetaminophen2.77 Hours
Adolescents: 12.5 mg/kg Every 4 Hours (q4h) IV AcetaminophenMultiple-dose Terminal Elimination Half-life [t1/2(h)] Pharmacokinetics of IV Acetaminophen3.37 Hours
Adolescents:15 mg/kg Every 6 Hours (q6h) IV AcetaminophenMultiple-dose Terminal Elimination Half-life [t1/2(h)] Pharmacokinetics of IV Acetaminophen4.10 Hours
Primary

Single-dose Maximum Plasma Concentration (Cmax) , Micrograms Per Milliliter (µg/mL) Pharmacokinetics of IV Acetaminophen

Cmax: Maximum Plasma Concentration

Time frame: Time Zero (just prior to first dose) to 24 hours post first dose

Population: Subjects who received at least one dose of IV acetaminophen and had at least 3 PK sampling assessments were included in the PK analysis.This outcome measure represents PK parameters for the first dose of IV acetaminophen.

ArmMeasureValue (MEDIAN)
Neonates:12.5 mg/kg Every 6 Hours (q6h) IV AcetaminophenSingle-dose Maximum Plasma Concentration (Cmax) , Micrograms Per Milliliter (µg/mL) Pharmacokinetics of IV Acetaminophen40.1 micrograms per milliliter (µg/mL)
Neonates: 15 mg/kg Every 8 Hours (q8h) IV AcetaminophenSingle-dose Maximum Plasma Concentration (Cmax) , Micrograms Per Milliliter (µg/mL) Pharmacokinetics of IV Acetaminophen20.1 micrograms per milliliter (µg/mL)
Infants: 12.5 mg/kg q4h IV AcetaminophenSingle-dose Maximum Plasma Concentration (Cmax) , Micrograms Per Milliliter (µg/mL) Pharmacokinetics of IV Acetaminophen16.7 micrograms per milliliter (µg/mL)
Infants:15 mg/kg Every 6 Hours (q6h) IV AcetaminophenSingle-dose Maximum Plasma Concentration (Cmax) , Micrograms Per Milliliter (µg/mL) Pharmacokinetics of IV Acetaminophen19.3 micrograms per milliliter (µg/mL)
Children: 12.5 mg/kg Every 4 Hours (q4h) IV AcetaminophenSingle-dose Maximum Plasma Concentration (Cmax) , Micrograms Per Milliliter (µg/mL) Pharmacokinetics of IV Acetaminophen18.2 micrograms per milliliter (µg/mL)
Children: 15 mg/kg Every 6 Hours(q6h) IV AcetaminophenSingle-dose Maximum Plasma Concentration (Cmax) , Micrograms Per Milliliter (µg/mL) Pharmacokinetics of IV Acetaminophen21.6 micrograms per milliliter (µg/mL)
Adolescents: 12.5 mg/kg Every 4 Hours (q4h) IV AcetaminophenSingle-dose Maximum Plasma Concentration (Cmax) , Micrograms Per Milliliter (µg/mL) Pharmacokinetics of IV Acetaminophen15.9 micrograms per milliliter (µg/mL)
Adolescents:15 mg/kg Every 6 Hours (q6h) IV AcetaminophenSingle-dose Maximum Plasma Concentration (Cmax) , Micrograms Per Milliliter (µg/mL) Pharmacokinetics of IV Acetaminophen25.5 micrograms per milliliter (µg/mL)
Primary

Single-dose Time to Reach Maximum Plasma Concentration [Tmax(h)] Pharmacokinetics of IV Acetaminophen

Tmax: Time to reach maximum plasma concentration (Cmax)

Time frame: Time Zero (just prior to first dose) to 24 hours post first dose

Population: Subjects who received at least one dose of IV acetaminophen and had at least 3 PK sampling assessments were included in the PK analysis.This outcome measure represents PK parameters for the first dose of IV acetaminophen.

ArmMeasureValue (MEDIAN)
Neonates:12.5 mg/kg Every 6 Hours (q6h) IV AcetaminophenSingle-dose Time to Reach Maximum Plasma Concentration [Tmax(h)] Pharmacokinetics of IV Acetaminophen0.450 Hour
Neonates: 15 mg/kg Every 8 Hours (q8h) IV AcetaminophenSingle-dose Time to Reach Maximum Plasma Concentration [Tmax(h)] Pharmacokinetics of IV Acetaminophen0.333 Hour
Infants: 12.5 mg/kg q4h IV AcetaminophenSingle-dose Time to Reach Maximum Plasma Concentration [Tmax(h)] Pharmacokinetics of IV Acetaminophen0.267 Hour
Infants:15 mg/kg Every 6 Hours (q6h) IV AcetaminophenSingle-dose Time to Reach Maximum Plasma Concentration [Tmax(h)] Pharmacokinetics of IV Acetaminophen0.267 Hour
Children: 12.5 mg/kg Every 4 Hours (q4h) IV AcetaminophenSingle-dose Time to Reach Maximum Plasma Concentration [Tmax(h)] Pharmacokinetics of IV Acetaminophen0.250 Hour
Children: 15 mg/kg Every 6 Hours(q6h) IV AcetaminophenSingle-dose Time to Reach Maximum Plasma Concentration [Tmax(h)] Pharmacokinetics of IV Acetaminophen0.250 Hour
Adolescents: 12.5 mg/kg Every 4 Hours (q4h) IV AcetaminophenSingle-dose Time to Reach Maximum Plasma Concentration [Tmax(h)] Pharmacokinetics of IV Acetaminophen0.250 Hour
Adolescents:15 mg/kg Every 6 Hours (q6h) IV AcetaminophenSingle-dose Time to Reach Maximum Plasma Concentration [Tmax(h)] Pharmacokinetics of IV Acetaminophen0.267 Hour
Secondary

Number of Subjects Reporting at Least One Treatment-Emergent Adverse Event (TEAE)

A TEAE is defined as an adverse event that starts on or after the start of study medication

Time frame: First dose of study medication to 30 days after the last dose of study medication

ArmMeasureValue (NUMBER)
Neonates:12.5 mg/kg Every 6 Hours (q6h) IV AcetaminophenNumber of Subjects Reporting at Least One Treatment-Emergent Adverse Event (TEAE)2 Participants
Neonates: 15 mg/kg Every 8 Hours (q8h) IV AcetaminophenNumber of Subjects Reporting at Least One Treatment-Emergent Adverse Event (TEAE)1 Participants
Infants: 12.5 mg/kg q4h IV AcetaminophenNumber of Subjects Reporting at Least One Treatment-Emergent Adverse Event (TEAE)10 Participants
Infants:15 mg/kg Every 6 Hours (q6h) IV AcetaminophenNumber of Subjects Reporting at Least One Treatment-Emergent Adverse Event (TEAE)9 Participants
Children: 12.5 mg/kg Every 4 Hours (q4h) IV AcetaminophenNumber of Subjects Reporting at Least One Treatment-Emergent Adverse Event (TEAE)2 Participants
Children: 15 mg/kg Every 6 Hours(q6h) IV AcetaminophenNumber of Subjects Reporting at Least One Treatment-Emergent Adverse Event (TEAE)11 Participants
Adolescents: 12.5 mg/kg Every 4 Hours (q4h) IV AcetaminophenNumber of Subjects Reporting at Least One Treatment-Emergent Adverse Event (TEAE)10 Participants
Adolescents:15 mg/kg Every 6 Hours (q6h) IV AcetaminophenNumber of Subjects Reporting at Least One Treatment-Emergent Adverse Event (TEAE)6 Participants
Secondary

Subjects Who Experience at Least One Serious Treatment-Emergent Adverse Event (TEAE)

A Serious Treatment Emergent Adverse Event is defined as any untoward medical occurrence at any dose of IV acetaminophen that; Results in Death, Is life-threatening, Requires inpatient hospitalization or causes prolongation of existing hospitalization, Results in persistent or significant disability/incapacity, Is a congenital anomaly/birth defect, Is an important medical event

Time frame: First dose to 30 days following last dose of study medication

Population: All analyses of safety were conducted on the Safety population, which included those subjects who received any portion of a dose of IV acetaminophen.

ArmMeasureValue (NUMBER)
Neonates:12.5 mg/kg Every 6 Hours (q6h) IV AcetaminophenSubjects Who Experience at Least One Serious Treatment-Emergent Adverse Event (TEAE)0 Participants
Neonates: 15 mg/kg Every 8 Hours (q8h) IV AcetaminophenSubjects Who Experience at Least One Serious Treatment-Emergent Adverse Event (TEAE)0 Participants
Infants: 12.5 mg/kg q4h IV AcetaminophenSubjects Who Experience at Least One Serious Treatment-Emergent Adverse Event (TEAE)0 Participants
Infants:15 mg/kg Every 6 Hours (q6h) IV AcetaminophenSubjects Who Experience at Least One Serious Treatment-Emergent Adverse Event (TEAE)1 Participants
Children: 12.5 mg/kg Every 4 Hours (q4h) IV AcetaminophenSubjects Who Experience at Least One Serious Treatment-Emergent Adverse Event (TEAE)1 Participants
Children: 15 mg/kg Every 6 Hours(q6h) IV AcetaminophenSubjects Who Experience at Least One Serious Treatment-Emergent Adverse Event (TEAE)2 Participants
Adolescents: 12.5 mg/kg Every 4 Hours (q4h) IV AcetaminophenSubjects Who Experience at Least One Serious Treatment-Emergent Adverse Event (TEAE)1 Participants
Adolescents:15 mg/kg Every 6 Hours (q6h) IV AcetaminophenSubjects Who Experience at Least One Serious Treatment-Emergent Adverse Event (TEAE)1 Participants

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026