wˈʌn ʌvðə fˈʌŋkʃənz ʌv sˌiːwˌaɪpˈiː θɹˈiː ˈeɪ fˈoːɹ ɪz tə mətˈæbəlˌaɪz, ɔːɹ bɹˈeɪk dˈaʊn, fˈɔːɹən kˈɛmɪkəlz ɪŋklˈuːdɪŋ mˈɛni dɹˈʌɡz jˈuːzd tə tɹˈiːt ˌeɪtʃˌaɪvˈiː.
One of the functions of CYP3A4 is to metabolise, or break down, foreign chemicals including many drugs used to treat HIV.