What is nelfinavir, and how does it work (mechanism of action)? Nelfinavir is an oral medication that is used for treating infections with the human immunodeficiency virus (HIV). It is in a class of drugs called protease inhibitors that also includes indinavir (Crixivan), amprenavir (Agenerase), ritonavir (Norvir) and saquinavir (Invirase, Fortovase). During infection with HIV, …
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