(medicine) something that treats or prevents or alleviates the symptoms of disease

an antiviral drug used to combat HIV infection

an antiviral drug used to combat HIV infection

an antiviral protein produced by cells that have been invaded by a virus; inhibits replication of the virus

an antiviral drug used against HIV; interrupts HIV replication by binding and blocking HIV protease; often used in combination with other drugs

an antiviral drug that inhibits the action of reverse transcriptase in retroviruses such as HIV