Side effects of entecavir: entecavir is nephrotoxic, which will further aggravate the condition and seriously worsen the liver function if the drug is stopped. Long-term use of entecavir can cause the following adverse reactions: headache, fatigue, dizziness, nausea, feeling very weak or tired, muscle and heart pain and sadness, respiratory problems, vomiting, abdominal pain and sadness and nausea, cold legs, dizziness and irregular heartbeat. Long-term use of entecavir will cause drug resistance in patients with hepatitis B. Generally, patients with hepatitis B will develop drug resistance after taking it for more than half a year, that is, no matter how much entecavir is taken, it will not work.
The main side effects of entecavir are as follows: cyclopentyl guanosine analogues of entecavir, an oral drug approved for marketing in China in 2005, are mainly used for adult chronic hepatitis B with active virus replication, persistently high alanine aminotransferase (ALT) or liver histology showing fluidity. Although entecavir can play a certain role in hepatitis B patients who use the drug for the first time. But for patients who take entecavir for a long time, the disadvantages outweigh the benefits.