Lamivudine is generally recommended to be taken once a day, 0.1g each time, the exact dose and frequency of taking has to do with the specific specification of the drug, if it is the specification of 0.1g each tablet, then take one tablet each time. Lamivudine is used in chronic hepatitis B. It helps to alleviate the elevation of alanine aminotransferase, inhibit the replication of viral activity as well as alleviate the relief of hepatic function compensation. Lamivudine is usually taken as one tablet once daily, either on an empty stomach or with food. Common adverse reactions to lamivudine include polyuria, muscle weakness, renal insufficiency, acute renal failure, elevated creatinine, and alopecia, and it is contraindicated in people who are allergic to lamivudine or any of the active substances in lamivudine. In addition, the administration of lamivudine carries certain risks, and it is recommended that patients use it under the guidance of a specialist, not without authorization.