baɪ pɹˈiːtɹˈiːɾɪŋ wɪð ɡɹˈeɪpfɹuːt dʒˈuːs pɹˈaɪɚ tə tˈeɪkɪŋ pɹˈoʊɾeɪs ɪnhˈɪbɪɾɚz ðə dʒˌiːˈaɪ ˈɪnteɪk ænd ðˈɛɹfoːɹ ðə bˌaɪoʊɐveɪlˈæbᵻɾi ɪz ɪŋkɹˈiːst.
By pre-treating with grapefruit juice prior to taking protease inhibitors the GI intake and therefore the bioavailabity is increased.