I kombinationsundersøgelser af emtricitabin med proteasehæmmere, nukleosid, nukleotid og non- nukleoside analoghæmmere af HIV- reverse transkriptase, desuden oberserveredes virkninger fra additiv til synergetisk.
In combination studies of emtricitabine with protease inhibitors, nucleoside, nucleotide and non-nucleoside analogue inhibitors of HIV reverse transcriptase, additive to synergistic effects were observed.