CHAMGAP
VERIFIEDPassed the Codex final verification and publication gate. Evidence-verification cutoff: 2026-08-15. AI was used for research and drafting; the existence of all 2 cited sources was verified at the original page, followed by blind grading, adversarial audit, and build validation. Methodology v1.0.
Verdict No. 2660 · Search date 2026-08-15 · Methodology v1.0

Ibuprofen plus acetaminophen,
does it really help with Reduced postoperative pain versus hydrocodone 5 mg plus acetaminophen 300 mg?

30-Second Summary
C
Evidence Grade C · 50 · Safety caution
The nonopioid combination slightly reduced pain for two days but did not establish large superiority
Ibuprofen can increase gastrointestinal bleeding, renal, and asthma risks; acetaminophen can cause liver toxicity when duplicated across products. People with ulcers, kidney disease, anticoagulant use, pregnancy, or other relevant conditions should confirm dosing with a dentist or physician.
What the
research shows
The grade is C with 50 points. OARS randomized 1,888 participants and included 1,815 who underwent eligible surgery, 909 versus 906, in the primary analysis. Nonopioid pain was lower by 0.70 points on day/night 1 (95% CI -0.94 to -0.45) and 0.28 on day/night 2 (-0.52 to -0.04); the full-period difference was -0.20 with a 98.75% CI of -0.45 to 0.05. The prespecified noninferiority margin was d = 1.0 on the 10-point scale. Separate literature reported 13% as a clinically meaningful difference; the observed differences were smaller than both benchmarks.
What the
ads claim
It would be overstated to say the nonopioid combination produced substantially greater analgesia. A more accurate conclusion is slightly lower average pain over the first two days and no worse pain across the full period. Verdict 1823 is B with 70 points for ibuprofen alone in postoperative pain, while verdict 2451 is D with 28 points for combined dosing in childhood fever; their indications, doses, and comparators differ.
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Useful facts when choosing a product

  • The nonopioid arm used ibuprofen 400 mg plus acetaminophen 500 mg; control used hydrocodone 5 mg plus acetaminophen 300 mg.
  • Pain differences were -0.70/10 on day 1, -0.28/10 on day 2, and -0.20/10 over the full period.
  • Verdict 1823 is B with 70 points for ibuprofen alone in postoperative pain, and verdict 2451 is D with 28 points for combined dosing in childhood fever; both differ from this active-control third-molar trial.
ID

Chamgap Semantic Classification Code

Candidate index · review held

S.ibuprofen-plus-acetaminophen-taken.UNK.postoperative-pain.reduce.UNK

Supplements and nutraceuticals > Ibuprofen plus acetaminophen taken > Unknown > postoperative pain > Reduction claim > Unknown

An automated migration candidate, not an issued permanent code; exact claim scope remains under review. This machine-generated migration candidate helps retrieval but is not a permanent assignment. The original verdict ID and URL remain authoritative.

Download semantic index (JSON) · Codebook v1

Gap Measurement · Verdict 2660 · C 50
What advertising claims
What independent, higher-quality research supports
△ GAP
01

What the research actually shows

The 2025 five-center double-blind trial by Feldman CA, Fredericks-Younger J, Desjardins PJ, Malmstrom H, Miloro M, Warburton G, Ward BB, Ziccardi VB, Greenberg P, Andrews T, Matheson PB, Benoliel R, Fine DH, and Lu SE obtained consent from 2,093, randomized 1,888, and analyzed 1,815 who completed eligible surgery: 909 nonopioid and 906 opioid. The central randomization code was held in access-restricted REDCap, opaque capsules matched appearance, the patient, surgeon, and site nurse coordinator were blinded, and the primary outcome was prespecified. The handling of 73 missing randomized participants (3.9%) could not be verified. The prespecified noninferiority margin was d = 1.0 on the 10-point scale; 13% was a clinically meaningful difference cited from separate external literature in the results paper. NCT04452344 and the article are one trial; the 2022 Trials paper is its protocol, not replication. NIDCR/NIH awards UG3DE028860 and UH3DE028860 funded it.

02

Why this is classified as C (50)

In a large independent double-blind trial, observed differences were smaller than the prespecified noninferiority margin d = 1.0 and an external 13% clinical benchmark, leaving E~. Of 1,888 randomized participants, 1,815 entered the primary analysis; handling of 73 missing participants (3.9%) could not be verified, so bias is B1 and the verdict C with 50 points.

Counterpoint. Avoiding opioids is valuable, but gastrointestinal, renal, bleeding, and total-acetaminophen risks still require individualized screening.

Rejudgment record. Cross-check applied — Cross-checked randomization and primary-analysis counts, pain estimates and intervals, the prespecified d = 1.0 noninferiority margin, external-literature 13% benchmark, allocation concealment, masking, public funding, 73 missing participants, and same-trial status across the main paper, ClinicalTrials.gov, and Trials protocol

Stored scoring profile
EndpointPSymptom or function itself is the target - including patient reports and performance tests
ReplicationR1Single confirmatory trial
IndependenceI2Decisive evidence is publicly or non-profit funded
Effect sizeE~Statistically positive but below the threshold

Stored derived and displayed grades match; this is not a current recalculation or validity check (C).

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Sub-claim grades by effect

This ingredient is marketed for several effects. A single overall grade blends strong and weak claims together, so each effect is graded separately here. The overall grade reflects the strongest disconfirming or core claim.

Effect (sub-claim)GradeBasis
Less pain than hydrocodone combination over the first two daysCDifferences were significant but smaller than the prespecified d = 1.0 noninferiority margin and the 13% clinical benchmark from separate literature.
Superior pain relief across the full postoperative periodDThe -0.20 difference had a 98.75% CI of -0.45 to 0.05.
✓

Cross-check — AI research and Codex final gate

AI was used for research and drafting. Blind grading, adversarial audit, and the methodology boundary rules were then reapplied before Codex performed the final evidence, grade, copy, and build checks. If a grade cannot be narrowed, both evidence positions and their reasons are published.
03

Evidence Table

StudyDesignSampleFundingEndpointResultWeight
Feldman CA, Fredericks-Younger J, Desjardins PJ, Malmstrom H, Miloro M, Warburton G, Ward BB, Ziccardi VB, Greenberg P, Andrews T, Matheson PB, Benoliel R, Fine DH, Lu SE. 2025Five-center double-blind stratified randomized noninferiority trial with central REDCap allocation concealment and appearance-matched capsules2,093 consented, 1,888 randomized, 1,815 in primary analysis, 909/906; handling of 73 missing participants (3.9%) unverifiedNIDCR/NIH UG3DE028860 and UH3DE028860Prespecified seven-day patient-reported pain modeled on the Brief Pain Inventory pain-severity domain; prespecified noninferiority margin d = 1.0Day 1 -0.70 (95% CI -0.94 to -0.45), day 2 -0.28 (-0.52 to -0.04), overall -0.20 (98.75% CI -0.45 to 0.05); also below the external-literature 13% clinical benchmarkLarge independent double-blind trial with small superiority; B1 because missing-data handling was unverified
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Receipt — 2 References

All 2 cited sources were verified for existence at the original page (as of 2026-08-15).

Feldman CA, Fredericks-Younger J, Desjardins PJ, Malmstrom H, Miloro M, Warburton G, Ward BB, Ziccardi VB, Greenberg P, Andrews T, Matheson PB, Benoliel R, Fine DH, Lu SE. Nonopioid vs opioid analgesics after impacted third-molar extractions: The Opioid Analgesic Reduction Study randomized clinical trial. J Am Dent Assoc. 2025;156:110-123.e9. PMID: 39755971. DOI: 10.1016/j.adaj.2024.10.014. NCT04452344.
checked
Feldman CA, Fredericks-Younger J, Lu SE, Desjardins PJ, Malmstrom H, Miloro M, Warburton G, Ward B, Ziccardi V, Fine D. The Opioid Analgesic Reduction Study (OARS)—a comparison of opioid vs. non-opioid combination analgesics for management of post-surgical pain: a double-blind randomized clinical trial. Trials. 2022;23:160. DOI: 10.1186/s13063-022-06064-8. NCT04452344.
checked
Research and draft: AI used · Cross-check: blind grading and adversarial audit
Final verification and publication gate: Codex · Evidence date: 2026-08-15 · Corrections: none
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Cite this verdict

Ibuprofen plus acetaminophen x pain versus an opioid combination after third-molar extraction Evidence Grade C card
[Chamgap] Ibuprofen plus acetaminophen x pain versus an opioid combination after third-molar extraction — Evidence Grade C·50. 2 cited sources checked. Source: https://chamgap.com/en/verdicts/joint-bone/ibuprofen-acetaminophen-vs-hydrocodone-third-molar-pain/ · CC BY 4.0

CC BY 4.0 — free to use with attribution; do not distort grades, numbers, or verdict meaning.

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What this document does and does not do

Chamgap is an information source. It reports what research has and has not confirmed; it does not tell readers what to take or buy. That decision belongs to readers and, when needed, medical or legal professionals. This verdict reflects literature available up to the search date and may change as new research appears. Nothing here is medical advice.
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