•    New prescribing info from the FDA notes that some Kaletra (lopinavir/ritonavir) takers have developed heart-rhythm disturbances (though it's not clear that the protease inhibitor causes the problem).

•    French researchers have reported four cases in which Intelence (etravirine, a non-nuke) seemed to lower levels of Isentress (raltegravir, an integrase inhibitor) in the blood. This interaction could undermine a combo's effectiveness.