Adrena 2mg Injection is used to treat the low blood pressure commonly seen following spinal anesthesia. It raises blood pressure by narrowing the blood vessels of the heart. Adrena 2mg 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 you are taking this medicine. The most common side effects of this medicine include nausea, vomiting, and increased heart rate. This medicine may not be suitable for some people. You must inform the 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.