How long can a 30 year old live on entecavir is mainly based on the progress of the patient’s condition, and if the condition is well controlled and there is no serious progression, the life expectancy can be the same as that of a normal person. Clinical use of this type of drug efficacy is certain, antiviral effect is stronger, can quickly reduce the number of hepatitis B virus replication to a relatively low level, so that the rate of viral mutation significantly reduced, the patient can be taken for a long time, to avoid the occurrence of cirrhosis of the liver. Entecavir is an anti-hepatitis B virus replication drug in the clinic, a nucleoside analog, mainly used for the treatment of chronic hepatitis B in the presence of hepatitis B virus replication, for the treatment of hepatitis B with persistently elevated serum aminotransferase levels or liver ultrasound showing active lesions. Note that the use of this product is contraindicated in patients who are hypersensitive to entecavir or its excipients. The use of entecavir may cause diarrhea, dyspepsia, nausea and vomiting, headache and dizziness, glutamic acid aminotransferase can be significantly elevated, and total bilirubin may be elevated. Taking Entecavir, it is recommended that you can consult a professional doctor in a regular hospital and carry out standardized treatment under the guidance of a professional doctor.