Hi, Nurokind-G injection is a combination of two drugs, Methylcobalamin and Gabapentin, which are used to treat neurological disorders. Methylcobalamin is a form of Vitamin B12, which is essential for the proper functioning of the nervous system. Gabapentin is an anticonvulsant drug that works by decreasing the abnormal activity of the nerve cells in the brain and spinal cord. In the case of L5-S1 disc protrusion, the injection is likely being used to help alleviate pain and improve nerve function. The injection is typically administered intramuscularly, and the dosage and frequency of injections will be determined by the prescribing physician based on the severity of the condition and the patient s response to treatment. Nurokind-G injection belongs to the category of drugs known as neurotropic vitamins and analgesics. Neurotropic vitamins are vitamins that are essential for the proper functioning of the nervous system. Analgesics are used to relieve pain. It is important to note that all medications can have potential side effects, and your husband needs to discuss any concerns or potential side effects with his prescribing physician. Take care. Hope I have answered your question. Let me know if I can assist you further. Regards, Dr. Priyanka, General & Family Physician