Dette tyder på, at der ikke er hæmning eller induktion af CYP3A4 in vivo.
Maraviroc had no clinically relevant effect on the pharmacokinetics of midazolam, the oral contraceptives ethinylestradiol and levonorgestrel, or urinary 6β -hydroxycortisol/ cortisol ratio, suggesting no inhibition or induction of CYP3A4 in vivo.