The benefit of simplification from tipranavir/ritonavir 500/200 bid to 500/100 bid guided by therapeutic drug monitoring.
2010
Despite being among the most potent protease inhibitors, the use of tipranavir (TPV) is hampered by a high pill burden and frequent side effects compared with other boosted protease inhibitors. A total of 10 patients receiving TPV/ritonavir (TPV/RTV) 500/200 for longer than 6 months were randomized to stay on the same dosing schedule or switch to TPV/RTV 500/100. Although all patients on TVP/RTV 500/200 remained stable for the next 12 weeks, 3 out of 5 patients who switched doses experienced benefits in terms of reducing aminotransferases and total cholesterol. Fasting triglycerides were also reduced in 2 of them. Plasma HIV-RNA remained undetectable in all patients, despite the observed decline in TPV trough concentrations.
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