Taking entecavir for cirrhosis does not cause low urine output. If a patient develops cirrhosis, the disease itself will lead to damage to the patient’s liver cells, the liver is the main site of albumin synthesis, and after the injury albumin synthesis decreases, the albumin content in the blood decreases, the plasma colloid osmotic pressure decreases, resulting in the formation of hepatic ascites, so that the patient appears to have symptoms of urinary oliguria or even anuria. Entecavir is an antiviral drug that is commonly used in the clinic to treat acute and chronic hepatitis caused by hepatitis viruses, severe hepatitis and cirrhosis in the presence of hepatitis B virus infection. It is an excellent treatment for liver diseases caused by viruses. Taking entecavir may cause patients to experience nausea, headache, dizziness and other adverse symptoms, when such symptoms occur, you can be under the guidance of the doctor to reduce or change the drug, if the patient is allergic to this type of drug, strictly prohibit the use of this drug. There is no correlation between patients taking entecavir in cirrhosis and patients with low urine output. It is better to go to the hospital in time for examination and treatment for the symptoms of oliguria.