Doravirine: Decreased plasma conc w/ strong CYP3A inducers; moderate CYP3A inducers (eg, rifabutin, dabrafenib, lesinurad, bosentan, thioridazine, nafcillin, modafinil, telotristat ethyl). Increased plasma conc w/ CYP3A inhibitors. Decreased exposure of midazolam (sensitive CYP3A substrate). Caution when co-administered w/ sensitive CYP3A substrates that also have a narrow therapeutic window (eg, tacrolimus & sirolimus). Lamivudine: Increased serum conc w/ medicinal products that reduce renal function or compete for active tubular secretion. Tenofovir disoproxil: Increased serum conc w/ medicinal products that reduce renal function or compete for active tubular secretion via OAT1, OAT3 or MRP4. Avoid concurrent or recent use of nephrotoxic medicinal products (eg, acyclovir, cidofovir, ganciclovir, valacyclovir, valganciclovir, aminoglycosides, high-dose or multiple NSAIDs).