The reference price range for a bottle of entecavir is in the tens to hundreds of dollars range, depending on the manufacturer as well as the dosage. Entecavir belongs to the antiviral class of drugs, clinically used for people with active viral replication, persistent elevation of serum alanine aminotransferase, or abnormal liver tissue lesions. The price of entecavir varies depending on the manufacturer and the dosage, and usually ranges from a few dozen dollars to several hundred dollars. Entecavir belongs to the prescription drugs, need to buy under the doctor’s prescription, different dosage and manufacturers, taking time and dosage there will be variability, need to strictly follow the doctor’s instructions to use drugs, so as not to lead to the effect of the drug is not good, affecting the therapeutic effect. Some patients may experience adverse reactions such as diarrhea, nausea, and elevated blood creatinine after taking entecavir, and need to inform the doctor in time. In daily life, it is recommended to purchase and use medication under the guidance of a professional doctor, and avoid taking any medication selfishly, so as not to lead to other serious consequences.