Flexbumin 20% Infusion is used to treat blood volume loss. It works by replacing the body fluids lost due to excessive trauma, bleeding, surgery, or kidney dialysis. Thus, it is helpful in treating low blood albumin levels. Flexbumin 20% Infusion must be administered under the supervision of a healthcare professional. You should not take it if you have any known allergies to this injection. Before taking it, inform the doctor you are suffering from any severe heart disease. 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 flushing, nausea, vomiting, chills, and fever. Inform your doctor if you are pregnant or breastfeeding. Let your doctor also know if you have any kidney diseases as a dose adjustment may be required. This injection is safe to use in patients suffering from liver diseases.