The purpose of this study is to evaluate the effectiveness and safety of cyclobenzaprine HCl 5 mg (muscle spasm medication) taken three times a day, alone or in combination with ibuprofen 400 mg or 800 mg (pain relief medication) taken three times a day, for the treatment of back or neck muscle pain with muscle spasm.
The objective of this multicenter, randomized, open-label, parallel-group, one-week study is to evaluate the effectiveness and safety of cyclobenzaprine HCl 5 mg three times a day for one week, alone or in combination with ibuprofen 400 mg or 800 mg taken three times a day, for acute back or neck muscle pain with muscle spasm. The primary measurement of efficacy is the subject-rated global impression of change after seven days of treatment, compared to baseline. Safety assessments during the study include the monitoring of adverse events, and a physical examination, assessment of vital signs and medical history of any present illnesses conducted during the baseline visit. The study hypothesis is that there will not be a statistically significant difference in patient ratings of global impression of change, muscle spasm, muscle pain, medication helpfulness, and functional ability, between the cyclobenzaprine HCl monotherapy group versus the cyclobenzaprine HCl/ibuprofen 400 mg and cyclobenzaprine HCl/ibuprofen 800 mg groups, for the treatment for acute back or neck muscle pain with spasm. Patients receive cyclobenzaprine HCl 5 mg administered orally three times a day for one week, or cyclobenzaprine HCl 5 mg with ibuprofen 400 mg administered orally three times a day for one week, or cyclobenzaprine HCl 5 mg with ibuprofen 800 mg administered orally three times a day for one week.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Enrollment
1,000
Subject-rated global impression of change from baseline, after seven days of treatment
Subject global impression of change after 3 days; Proportion of responders after 3 and 7 days, Change from baseline in subject-rated pain intensity, muscle spasm intensity, functional ability, and medication helpfulness after 3 and 7 days.
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