Classes of Antiretroviral Drugs

Drug Class

Category^a

Nucleoside reverse transcriptase inhibitors

  Abacavir

C

  Didanosine

B

  Emtricitabine

B

  Lamivudine

C

  Stavudine

C

  Tenofovir

B

  Zalcitabine

C

  Zidovudine

C

Non-nucleoside reverse transcriptase inhibitors

  Delavirdine

C

  Efavirenz

C

  Nevirapine

C

Protease inhibitors

  Amprenavir

C

  Atazanavir

B

  Fosaprenavir

C

  Indinavir

C

  Lopinavir/ritonavir

C

  Nelfinavir

B

  Ritonavir

B

  Saquinavir

B

Fusion inhibitors

  Enfuvirtide

B

^aFDA pregnancy category classification—see Chapter 14

(p. 344).

From U.S. Public Health Service (2004a).