Elvitegravir / cobicistat / emtricitabine / tenofovir df + Entecavir

MediHelp rates the interaction as moderate. Elvitegravir / cobicistat / emtricitabine / tenofovir df and Entecavir can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken. Entecavir, emtricitabine and tenofovir are all eliminated by the kidney through filtration and active tubular secretion, and cobicistat can raise serum creatinine by inhibiting tubular secretion. Concurrent use may increase concentrations of the renally cleared drugs and the risk of renal adverse events. Entecavir is sometimes combined with tenofovir regimens in hepatitis B coinfection.

MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor serum creatinine, estimated clearance and phosphate regularly. Adjust the entecavir dose if creatinine clearance falls.

MediHelp also lists interactions of Entecavir with, for example, Alogliptin-metformin, Canagliflozin-metformin, Cidofovir. The full list is on the Entecavir page.