system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
Lamivudine acts against which of the following viruses?
assistant
The correct answer is  Lamivudine inhibits HBV DNA polymerase and HIV reverse transcriptase by competing with deoxycytidine triphosphate for incorporation into the viral DNA, resulting in chain termination. Lamivudine achieves 3-4 log decreases in viral replication in most patients and suppression of HBV DNA to undetectable levels in about 44% of patients. Ref: Katzung 11th edition Chapter 49.