Lamivudin udviser lav cytotoksicitet over for lymfocytter i perifert blod, over for etablerede lymfocyt og monocyt- makrofage cellelinier og over for forskellige celleforstadier i knoglemarven in vitro.
Lamivudine demonstrates low cytotoxicity to peripheral blood lymphocytes, to established lymphocyte and monocyte-macrophage cell lines, and to a variety of bone marrow progenitor cells in vitro.