Two anti-HIV drugs pose potential heart risks when used together, the U.S. Food and Drug Administration warned Tuesday.
Taken in combination, Abbott Laboratories' Norvir and a Roche medication, Invirase, can alter electrical activity of the heart, according to preliminary data reviewed by the FDA, the Associated Press reported.
The result may be irregular heart rhythms that can trigger fainting and even death.
Invirase was approved 15 years ago, the AP said. It is prescribed with Norvir and other anti-viral drugs to control HIV, the virus that causes AIDS, in adults.
The FDA said its information comes from data submitted by Roche and noted its review is continuing.