Limaprost is primarily used in the treatment of conditions related to blood flow and circulation. It is commonly prescribed for patients with peripheral vascular diseases, such as thromboangiitis obliterans (Buerger's disease), to improve blood flow and reduce symptoms like pain and numbness in the extremities. Additionally, it is effective in managing symptoms associated with lumbar spinal canal stenosis, including leg pain and numbness, by enhancing circulation and reducing nerve compression. Limaprost works by dilating blood vessels and inhibiting platelet aggregation, which helps in alleviating ischemia and promoting tissue repair. Its therapeutic benefits make it a valuable option for improving mobility and quality of life in patients with these conditions.