Study Comparing A New Drug Containing The Combination Meloxicam And Cyclobenzaprine In The Treatment Of Acute Lumbago

Inclusion Criteria: * Sign, initial and date the Informed Consent Form (ICF); * Be between 18 and 75 years old; * Have acute lumbago with onset in less than 72 hours; * Have a normal X-ray; * Have a baseline score in the VAS higher than or equal to 40 mm; Exclusion Criteria: * Use of triptans; * Use of monoamine oxidase inhibitors; * Use of NSAIDs within the last week; * Previous use of narcotics; * Have any rheumatologic disease; * Conditions of chronic pain; * Have any significant chronic comorbidity; * Previous history of gastrointestinal bleed or ulcers; * History of allergy to any of the components of study medications; * Recent history of a myocardial infarction, cardiac arrhythmia, cardiac conduction block or change, or congestive heart failure; * Female patients who are pregnant or breastfeeding or who wish to become pregnant or who deny using safe contraceptive methods during the study will not be enrolled in the study; * Have participated in another clinical trial within the last 12 months.