Pregeb M 150 Capsule belongs to the class of medications ‘anticonvulsants’ used in the treatment of neuropathic pain. Neuropathic pain is a chronic (long-term) progressive nerve disease that causes nerve pain due to nerve damage or the nervous system's malfunctioning. It is mostly seen in patients who had suffered a trauma or nerve injury, diabetes, vitamin deficiencies, cancer, multiple sclerosis (disease of the brain and spinal cord), shingles (a viral infection), and HIV.