Neuropatic pain is a type of chronic pain condition that generally arises due to certaintype of nerve damage or lesions.The pharmacological treatment options for neuropathic pain are generally based upon their symptoms and are managed by various classes of drugs such as anti-depressants, anti-convulsants, anti-spasmodic, opioids etc. However since majority of these drugs are given by oral route, drugs undergo hepatic metabolism andenzymatic degradation.