Kaletra is a medication your doctor may prescribe to treathuman immunodeficiency virus (HIV-1). It is often given in combination with other antiviral medications. HIV is a viral infection of the immune system. HIV viral particles attach to, enter, and destroy cells of the immune system that fight off infection. Fact Table Formula C37H48N6O5S2 License EU EMA, US FDA Bioavailability - Legal status RX Only Chemical Name Lopinavir/ritonavir Elimination half-life 3-5 hours Dosage (Strength) 80/20mg Pregnancy No known risks Brands Kaletra, Aluvia Protein binding 98-99% PubChem CID 11979606 MedlinePlus a602015 ChEBI 45409 ATC code J05AR10 DrugBank DB00503 KEGG D02498 Routes of administration By mouth