How Does Truvada React With Other Drugs?
Truvada can interact with other drugs or supplements you are taking. These interactions can change the amount of each drug in your bloodstream and cause an under- or overdose. New interactions are constantly being identified. Make sure that your health care provider knows about ALL drugs and supplements you are taking. Truvada should not be taken with 3TC (lamivudine, Epivir). Truvada increases levels of ddI (Videx). The dose of ddI taken with Truvada should be reduced to 250 mg for people weighing 60 kg (132 lbs) or more. There is no information on ddI dosing for people weighing less than this. Truvada should not be used with tenofovir (Viread) or emtricitabine (Emtriva, FTC) or with drugs containing lamivudine (Epivir, 3TC) including Combivir, Trizivir or Epzicom. There are no data on interactions between emtricitabine and methadone. Tenofovir does not affect blood levels of methadone.