What is atazanavir sulfate?

Atazanavir sulfate is a drug used in the treatment of human immunodeficiency virus (HIV) infection, including all stages of HIV infection and acquired immunodeficiency syndrome (AIDS). It may also be given to people immediately after they are exposed to the HIV to help prevent an HIV infection from becoming established. Atazanavir sulfate is generally used in combination with other medications to decrease the chances of the virus becoming resistant to therapy.

Atazanavir sulfate belongs to a class of antiviral drugs known as HIV protease inhibitors. Protease is an enzyme that the HIV requires to reproduce. By blocking the action of this enzyme, protease inhibitors prevent the HIV from multiplying, which slows the progression of HIV-related disease. It does not directly kill the HIV, so it cannot cure HIV infection. It also does not prevent the HIV from being transmitted to others.

Atazanavir sulfate is available as a capsule that is taken by mouth. It is a prescription drug that is sold in the United States under the trade name Reyataz. There are no generic versions of the drug currently available.

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