Comparing Efficacy and Safety Between Eperisone a BID and a TID Regimen in Acute Low Back Pain Patients

Inclusion Criteria: * Subjects who have ability to comprehend the contents of study and before participating in trial and have willingness to sign of informed consent in writing * 20≤ age ≤60 * A patient has symptom of acute low back pain * 4≤ VAS Exclusion Criteria: * Subjects who cannot prohibit anti-inflammatory drug, painkiller or muscle relaxants during clinical trial * Chronic rheumatoid arthritis patients * Patients having a medical history of hypersensitivity to Eperisone Hydrochloride * Subject having a hereditary problem such as galactose intolerance, Lapp lactase deficiency, or glucose galatose malabsorption * Participation in other studies before 60 days of first dosing * Female patients having positive pregnancy test, lactating women,planning pregnancy during clinical trial * Inadequate subject for the clinical trial by the investigator's decision