Analgecine for Treatment of Low Back Pain

Inclusion Criteria: * Patients with chronic low back pain including patients with spinal degeneration, lumbar herniation, lumbar spinal stenosis, and spondylolisthesis * Pain sustained for 3 or more months after surgical treatment. * Diagnosis is done by X-ray examination. * The Visual analysis Scale for Pain is between 3 and 8. Exclusion Criteria: * Acute low back pain patients. * Allergy to the tested drug. * Patients with tuberculosis, tumors, Cushing's syndrome, endocrine diseases, neuropathic diseases, psychiatric problems, and serious deficit in heart / liver /renal functions. * Patients with pain caused by vascular diseases, stress, or tumors. * Patients with pregnancy, lactation, or planning to have pregnancy within 3 months after recruitment. * Alcoholic and drug addicted subjects * Dementia patients who can cooperate with the study activities. * Patients undergone lumber surgery within 3 months at the date of recruitment. * Patients who are directly related to the research staff. * Patients who have been participated in other drug clinical trial in the past 3 months at the date of the recruitment. * Patients who are not fit for the clinical trial based on the research staff observation.