Darunavir (DRV), sold under the brand name Prezista among others, is an antiretroviral medication used to treat and prevent HIV/AIDS. It is generally recommended for use with other antiretrovirals. It is often used with low doses ritonavir or cobicistat to increases darunavir levels. It may be used for prevention after a needlestick injury or other potential exposure. It is taken by mouth once to twice a day.
Common side effects include diarrhea, nausea, abdominal pain, headache, and rash. Severe side effects include allergic reactions, liver problems, and skin rashes such as toxic epidermal necrolysis. While poorly studied in pregnancy it appears to be safe for the baby. It is of the protease inhibitor (PI) class and works by blocking HIV protease.