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Comparison of Ibuprofen, Cyclobenzaprine, or Both for Acute Cervical Strain: A Randomized Clinical Trial

Comparison of Ibuprofen, Cyclobenzaprine, or Both for Acute Cervical Strain: A Randomized Clinical Trial

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT00790270
Enrollment
61
Registered
2008-11-13
Start date
2003-01-31
Completion date
2004-01-31
Last updated
2012-11-21

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

Conditions

Cervical Strain

Keywords

Cervical strain, whiplash, ibuprofen, cyclobenzaprine

Brief summary

The purpose of this study is to see whether the combination of a muscle relaxant and anti-inflammatory drug is more effective at relieving pain in patients with neck strains or whiplash than either of the two medications alone.

Detailed description

Muscle relaxants have been used extensively for neck and back pain since muscle spasm is thought to play a role in the cycle of pain and spasm. However, prior studies have conflicting results regarding their additive effect when given in addition to analgesics such as the NSAIDs. Because they have the potential to lead to adverse events their efficacy should be clearly demonstrated before their routine use.

Interventions

5 mg orally every 8 hours as needed

DRUGIbuprofen

Ibuprofen 400 mg every 8 hours as needed

DRUGIbuprofen plus Cyclobenzaprine

Ibuprofen 400 mg plus cyclobenzaprine 5 mg every 8 hours as needed

Sponsors

Stony Brook University
Lead SponsorOTHER

Study design

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

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* neck pain within 24 hours of injury

Exclusion criteria

* Children, allergy or contraindication to any of the study drugs

Design outcomes

Primary

MeasureTime frameDescription
PainDaily for 1 week
Use of Rescue Medications24 hoursthe number of patients taking additional rescue medications beyond the study meds

Secondary

MeasureTime frameDescription
Time to Resumption of Work1 week
Resumption of Work or Schoolnext daynumber of patients resuming regular activity the day following enrollment.

Countries

United States

Participant flow

Participants by arm

ArmCount
Cyclobenzaprine21
Ibuprofen20
Ibuprophen Plus Cyclobenzaprine20
Total61

Baseline characteristics

CharacteristicIbuprofenIbuprophen Plus CyclobenzaprineCyclobenzaprineTotal
Age, Categorical
<=18 years
0 Participants0 Participants0 Participants0 Participants
Age, Categorical
>=65 years
0 Participants0 Participants0 Participants0 Participants
Age, Categorical
Between 18 and 65 years
20 Participants20 Participants21 Participants61 Participants
Age Continuous32 years
STANDARD_DEVIATION 10
32 years
STANDARD_DEVIATION 10
36 years
STANDARD_DEVIATION 13
33 years
STANDARD_DEVIATION 13
Region of Enrollment
United States
20 participants20 participants21 participants61 participants
Sex: Female, Male
Female
11 Participants9 Participants14 Participants34 Participants
Sex: Female, Male
Male
9 Participants11 Participants7 Participants27 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
deaths
Total, all-cause mortality
— / —— / —— / —
other
Total, other adverse events
0 / 210 / 200 / 20
serious
Total, serious adverse events
0 / 210 / 200 / 20

Outcome results

Primary

Pain

Time frame: Daily for 1 week

Primary

Use of Rescue Medications

the number of patients taking additional rescue medications beyond the study meds

Time frame: 24 hours

Population: number of patients using additionl anlagesics on the day following enrollment

ArmMeasureValue (NUMBER)
CyclobenzaprineUse of Rescue Medications13 participants
IbuprofenUse of Rescue Medications9 participants
Ibuprophen Plus CyclobenzaprineUse of Rescue Medications9 participants
Secondary

Resumption of Work or School

number of patients resuming regular activity the day following enrollment.

Time frame: next day

ArmMeasureValue (NUMBER)
CyclobenzaprineResumption of Work or School8 participants
IbuprofenResumption of Work or School14 participants
Ibuprophen Plus CyclobenzaprineResumption of Work or School13 participants
Secondary

Time to Resumption of Work

Time frame: 1 week

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