N S 0.9% Infusion consists of purified salt solution. It is used for short term fluid replacement. Thus, it treats hypovolemia that can result due to any dehydration, or injury. It helps to restore the salt and electrolyte levels in the body. N S 0.9% Infusion works by replenishing salt and electrolyte levels in the body. This injection 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 use of this medicine may cause some common side effects such as injection site reactions, hypotension, fever, tremor, and chills. Let your doctor know if you are bothered by any of these. Before receiving this medicine, inform your doctor if you are pregnant or breastfeeding or if you have kidney diseases as dose adjustment may be required. This injection is safe to use in patients suffering from liver diseases.