Volrin TH 2mg/37.5mg Injection is a combination medicine used in the treatment of pain due to muscle spasm. It improves the movement of muscles and provides relief from pain and discomfort associated with muscle spasms. Volrin TH 2mg/37.5mg Injection is given by a doctor or a nurse and should not be self-administered at home. You should use it strictly as advised by your doctor. Do not use more or use it for longer duration than recommended by your doctor. Some of the common side effects of this medicine include nausea, vomiting, diarrhea, heartburn, stomach pain, and loss of appetite. If any of these side effects bother you or do not go away with time, you should let your doctor know. Your doctor may help with ways to reduce or prevent these side effects. The medicine may not be suitable for everybody. Before taking it, let your doctor know if you have any problems with your heart, kidneys, and liver. To make sure it is safe for you, let your doctor also know all the other medicines you are taking. Pregnant and breastfeeding mothers should first consult their doctors before using the medicine.