NRG is used for short term fluid replacement. It works by replenishing fluid loss. Thus, it treats hypovolemia that can result due to dehydration, injury, or burns. NRG must be administered under the supervision of a healthcare professional. You should not take it, if you have any known allergy from this injection. Your doctor may check your blood pressure and ask you to get regular blood tests done while you are using this injection. The most common side effects include injection site reactions such as pain, swelling, and redness. Inform your doctor if you are pregnant or suffering from kidney...