Interaction table Interactions between darunavir/ ritonavir and protease inhibitors, antiretroviral agents other than protease inhibitors and other non-antiretroviral medicinal products are listed in the tables below (increase is indicated as “↑”, decrease as “↓”, no change as “↔”, not determined as “ ND”, twice daily as “ b. i. d.”, once daily as “ q. d.” and once every other day as “ q. o. d.”).