Mephentine 15mg Injection is used to raise blood pressure in hypotensive (low blood pressure) states, such as following spinal anesthesia. It increases the blood pressure rapidly by increasing the pumping capacity of the heart and narrowing blood vessels of the heart. Mephentine 15mg Injection is administered under the supervision of a doctor. Your doctor will decide the dose and duration of the medicine for you. You should continue all your other medicines that are advised by the doctor for your long-term treatment even after this injection. Your doctor may advise for regular monitoring of blood pressure while your taking this medicine. It may cause side effects like high blood pressure, anxiety and insomnia (difficulty in sleeping). This medicine may not be suitable for some people. You must inform doctor if you are suffering from diabetes, liver, heart or kidney disease. Also let your doctor know about all the other medications that you are using regularly. This medicine is not usually recommended during pregnancy or breastfeeding, so always consult your doctor before taking it.