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Timing tylenol: could a fixed schedule beat 'as needed' for kids' post-surgery pain?

NCT ID NCT06689943

Symptom relief Sponsor: Ann & Robert H Lurie Children's Hospital of Chicago Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused This study
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jul 30, 2026 · Last updated Jul 31, 2026 · Updated 1 time

Summary

This Phase 2 trial tests whether giving children acetaminophen (Tylenol) on a strict schedule every 6 hours for 48 hours after strabismus surgery reduces pain more than the usual as-needed approach. About 80 children aged 4–12 will take part, with parents and children reporting pain scores. The goal is to see if a regimented course prevents underdosing and leads to better pain control.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
acetaminophen (Tylenol) given on a fixed schedule every 6 hours for 48 hours after surgery
What this could lead to
If scheduled dosing works better, it could give parents a clearer, more effective way to manage children's pain after eye muscle surgery.
What could go wrong
This is a small Phase 2 trial, so results may not apply broadly. The difference between scheduled and as-needed dosing might be small, and the study does not test long-term outcomes.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Phase 2

Tests whether the treatment actually works, and watches for side effects, in a larger group.

Participants

About 80 people

The number the study aims to enrol. It can still change while the study runs.

Expected to start

Oct 2026

An estimate. Start dates often move.

Expected to finish

Dec 2030

An estimate. End dates often move.

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

4 to 12 years

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Children between 4-12 years old * Children receiving single muscle, bilateral horizontal strabismus surgery (that is, children who are having only one horizontal eye muscle in each eye operated on) at Lurie Children's hospital in Chicago, IL * ASA classification 1 or 2. Note: ASA is a physical status classification system (scale of 1-6) created by the American Society of Anesthesiologists to describe patients prior to surgery. ASA 1 or 2 means the patient is either healthy or has mild systemic disease prior to surgery. Exclusion Criteria: * ASA classification 3 or higher (patient has severe systemic disease or worse) * Contraindication to toradol (anesthesia) * Contraindication to acetaminophen * Previous strabismus surgery

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Conditions

The condition(s) this trial relates to.

Pain strabismus

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Strabismus

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    1 site. The list below names each one and where it is.

  2. The official record

    The full official record for this study. This one lists no contact details, but it is the first place any would appear.

    Open the record ↗

  3. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Locations

  • Ann & Robert H. Lurie Children's Hospital of Chicago

    Chicago, Illinois, 60611, United States

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