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Study of Naproxen Capsules to Treat Dental Pain

A Phase 2, Randomized, Double-Blind, Single-Dose, Parallel-Group, Active- and Placebo-Controlled Study of Naproxen [Test] Capsules for the Treatment of Pain After Surgical Removal of Impacted Third Molars

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT01229228
Enrollment
254
Registered
2010-10-27
Start date
2010-10-31
Completion date
2011-04-30
Last updated
2012-05-22

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

Conditions

Dental Pain

Brief summary

The purpose of the study is to determine whether Naproxen Test Formulation Capsules are safe and effective for the treatment of dental pain.

Interventions

DRUGNaproxen Test

200-mg single dose

single dose

DRUGPlacebo

single dose

Sponsors

Iroko Pharmaceuticals, LLC
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
TRIPLE (Subject, Investigator, Outcomes Assessor)

Eligibility

Sex/Gender
ALL
Age
18 Years to 50 Years
Healthy volunteers
Yes

Inclusion criteria

* Patient is male or female between 18 and 50 years of age * For women of child-bearing potential: a woman who is not pregnant and not nursing, and who is practicing an acceptable method of birth control * Patient requires extraction of 2 or more third molars * Patient must be willing to stay at the study site overnight

Exclusion criteria

* Patient has hypersensitivity, allergy, or clinically significant intolerance to any medications to be used in the study, or related drugs * Patient has a current disease or history of a disease that will impact the study or the patient's well-being * Patient has used or intends to use any of the medications that are prohibited by the protocol * Patient has a history of drug or alcohol abuse or dependence, or patient has a positive urine drug screen or alcohol breathalyzer test * Patient has taken another investigational drug within 30 days prior to screening

Design outcomes

Primary

MeasureTime frameDescription
Analysis of Total Pain Relief (TOTPAR) Over 0 to 12 Hours (TOTPAR-12) After Time 0Over 0 to 12 HoursTotal pain relief as computed as a time-weighted sum of individual patient pain relief scores at each timepoint from 0-12 hours. Values for TOTPAR are measured from 0 to 4 on the Pain Relief Scale 0 None Min; 1 A little; 2 Some; 3 A lot; 4 Complete Max The TOTPAR is a weighted measure of the observations; the minimum possible value is 0 and the maximum possible value is 60.

Countries

United States

Participant flow

Participants by arm

ArmCount
Naproxen Test (Lower Dose)51
Naproxen Test (Upper Dose)51
Naprosyn 250 mg50
Naprosyn 500 mg51
Placebo51
Total254

Baseline characteristics

CharacteristicNaproxen Test (Upper Dose)Naprosyn 250 mgNaprosyn 500 mgNaproxen Test (Lower Dose)PlaceboTotal
Age, Categorical
<=18 years
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Age, Categorical
>=65 years
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Age, Categorical
Between 18 and 65 years
51 Participants50 Participants51 Participants51 Participants51 Participants254 Participants
Age Continuous21.1 years
STANDARD_DEVIATION 3.29
20.7 years
STANDARD_DEVIATION 2.2
20.9 years
STANDARD_DEVIATION 2.88
21.1 years
STANDARD_DEVIATION 2.93
21.1 years
STANDARD_DEVIATION 3.02
21.0 years
STANDARD_DEVIATION 2.87
Region of Enrollment
United States
51 participants50 participants51 participants51 participants51 participants254 participants
Sex: Female, Male
Female
30 Participants32 Participants21 Participants33 Participants32 Participants148 Participants
Sex: Female, Male
Male
21 Participants18 Participants30 Participants18 Participants19 Participants106 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
EG003
affected / at risk
EG004
affected / at risk
deaths
Total, all-cause mortality
— / —— / —— / —— / —— / —
other
Total, other adverse events
28 / 5127 / 5125 / 5026 / 5131 / 51
serious
Total, serious adverse events
1 / 500 / 510 / 500 / 510 / 51

Outcome results

Primary

Analysis of Total Pain Relief (TOTPAR) Over 0 to 12 Hours (TOTPAR-12) After Time 0

Total pain relief as computed as a time-weighted sum of individual patient pain relief scores at each timepoint from 0-12 hours. Values for TOTPAR are measured from 0 to 4 on the Pain Relief Scale 0 None Min; 1 A little; 2 Some; 3 A lot; 4 Complete Max The TOTPAR is a weighted measure of the observations; the minimum possible value is 0 and the maximum possible value is 60.

Time frame: Over 0 to 12 Hours

ArmMeasureValue (LEAST_SQUARES_MEAN)
Naproxen Test (Lower Dose)Analysis of Total Pain Relief (TOTPAR) Over 0 to 12 Hours (TOTPAR-12) After Time 025.868 units on a scale
Naproxen Test (Upper Dose)Analysis of Total Pain Relief (TOTPAR) Over 0 to 12 Hours (TOTPAR-12) After Time 031.948 units on a scale
Naprosyn 250 mgAnalysis of Total Pain Relief (TOTPAR) Over 0 to 12 Hours (TOTPAR-12) After Time 024.373 units on a scale
Naprosyn 500 mgAnalysis of Total Pain Relief (TOTPAR) Over 0 to 12 Hours (TOTPAR-12) After Time 028.549 units on a scale
PlaceboAnalysis of Total Pain Relief (TOTPAR) Over 0 to 12 Hours (TOTPAR-12) After Time 09.531 units on a scale
p-value: <0.00195% CI: [16.923, 27.91]ANCOVA

Source: ClinicalTrials.gov · Data processed: Mar 22, 2026