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Updates to the Database of ARV Drug Interactions

HIV Meds Quarterly Research Brief, Summer 2009

The following table summarizes recent additions to the HIV InSite Database of Antiretroviral Drug Interactions . For a full description of the updates, including references to the studies from which the data were derived, click on a specific drug name in the table below and search for the interacting agent.

New ARV Interactions (April-July 2009)

Drug OneDrug TwoClinical EffectsMechanismsManagement
Source: McNicholl I. HIV InSite Database of Antiretroviral Drug Interactions . University of California San Francisco: Center for HIV Information; 2009
TenofovirEtravirineNo dosage adjustment necessary
NevirapineFluconazolePossibly ↑ nevirapine effectsInhibition of CYP450 3A4 by fluconazoleNo dosage adjustment necessary
AtazanavirSimvastatin↑ simvastatin effects (eg, myopathy, rhabdomyolysis)Inhibition of CYP450 3A4 by atazanavir Do not coadminister

Alternative agents:
Atorvastatin (low dose); pravastatin