Norvir is a medication used to treat HIV infections. While it is the brand name for the drug ritonavir, there are other synonyms for the medication. Some common generic names for Norvir include ritonavir caps, ritonavir oral solution, and ritonavir tablets. Other names that may be used interchangeably with Norvir include Kaletra, Lopinavir, and Ritonavir. While these drugs are all used to treat HIV infections, they may have slight differences in their chemical makeup or the way they are administered. It is important to talk to a healthcare professional about which medications are right for individual needs and health conditions.