Atazanavir is a medication used in the treatment of HIV (human immunodeficiency virus) infection. It belongs to a class of drugs known as protease inhibitors.

Atazanavir works by inhibiting the activity of the HIV protease enzyme, which is essential for the replication of the virus. By blocking this enzyme, atazanavir helps to reduce the viral load in the body and slow down the progression of HIV infection.


The medication is typically prescribed as part of combination antiretroviral therapy (ART), which involves using multiple drugs to target different stages of the HIV life cycle. The specific combination and dosage of drugs are determined by the healthcare provider based on the individual’s HIV strain, treatment history, and other factors.

Common side effects of atazanavir may include nausea, diarrhea, jaundice (yellowing of the skin and eyes), and skin rash. More serious side effects, such as liver problems or changes in heart rhythm, can occur but are rare. Regular monitoring of liver function and other parameters may be recommended during treatment.


It is important to take atazanavir as prescribed and not miss doses to avoid the development of drug resistance and maintain its effectiveness. It should be taken with food to enhance its absorption.

Atazanavir may interact with other medications, so it is important to inform the healthcare provider about all medications being taken, including over-the-counter drugs and supplements.


In summary, atazanavir is a medication used in the treatment of HIV infection. It inhibits the HIV protease enzyme to reduce the viral load and slow down the progression of the disease. Regular monitoring and adherence to healthcare provider instructions are important during atazanavir treatment.


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