Antimicrob Agents Chemother. 2005 Aug;49(8):3558-61.

Pharmacokinetics of nelfinavir and efavirenz in antiretroviral-naive, human immunodeficiency virus-infected subjects when administered alone or in combination with nucleoside analog reverse transcriptase inhibitors.

Smith PF¹, Robbins GK, Shafer RW, Wu H, Yu S, Hirsch MS, Merigan TC, Park JG, Forrest A, Fischl MA, Morse GD; ACTG 384-5006 Team.

Author information

1: Adult ACTG Pharmacology Support Laboratory, Laboratory for Antiviral Research, Department of Pharmacy Practice, School of Pharmacy and Pharmaceutical Sciences, University at Buffalo, Buffalo, NY 12460, USA. pfsmith@buffalo.edu

Abstract

Pharmacokinetic studies were conducted with human immunodeficiency virus-infected patients receiving efavirenz, nelfinavir, or both agents at weeks 4 and 32. Reductions of 25% and 45% were observed in the mean nelfinavir area under the concentration-time curve and minimum concentration of the drug in serum, and there was a 31% more rapid half-life for patients receiving both drugs compared to patients receiving nelfinavir alone. There were no significant differences in efavirenz pharmacokinetics.