NAPLEX (North American Pharmacist Licensure Examination) Practice Exam

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Which medication is classified as a fusion inhibitor?

  1. Ibalizumab-uiyk

  2. Enfuvirtide (Fuzeon)

  3. Biktarvy

  4. Atripla

The correct answer is: Enfuvirtide (Fuzeon)

Enfuvirtide, also known as Fuzeon, is the only medication among the given options that is classified as a fusion inhibitor. Ibalizumab-uiyk is a monoclonal antibody used to treat HIV infection, but it works through a different mechanism than fusion inhibition. Biktarvy and Atripla are both combination medications used to treat HIV, but they do not contain a fusion inhibitor. Therefore, the correct answer is Enfuvirtide.

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