What are the most important things to know about darunavir?
Darunavir can cause serious, life-threatening side effects. These includeproblems, severe skin rash and allergic reactions, and .
Some people taking darunavir in combination with either ritonavir or cobicistat ( used with darunavir) may develop liver problems, which can be life-threatening. People with a history of chronic (HBV) or (HCV) may have an increased risk of developing new or worsening liver problems while taking darunavir in combination with either ritonavir or cobicistat.
Contact your health care provider right away if you have any of the following symptoms that could be signs of liver problems:
- Yellowing of your skin or the whites of your eyes ( )
- Dark-colored urine
- Light-colored bowel movements
- Loss of appetite for several days or longer
- Nausea or vomiting
- Pain, aching, or tenderness on the right side of your stomach/abdominal area
Contact your health care provider right away if you develop a rash while taking darunavir (and either ritonavir or cobicistat). Stop taking darunavir (and either ritonavir or cobicistat) and get medical help right away if you develop a rash with any of the following symptoms:
- General ill feeling
- Extreme tiredness
- Muscle or joint aches
- Blistering or peeling skin
- Blisters or sores in your mouth
- Redness or swelling of the eyes ( )
- Swelling of your face, lips, mouth, tongue, or throat
- Trouble breathing or swallowing
Taking darunavir with certain other medicines may cause serious, life-threatening side effects. Tell your health care provider about all the medicines you take, including prescription and over-the-counter medicines, vitamins, and herbal supplements.
While taking darunavir, it is important to keep all of your appointments with your health care provider.
What is darunavir?
- When darunavir is taken with ritonavir, it may be used in adults and children 3 years of age and older who weigh at least 22 lb (10 kg).
- When darunavir is taken with cobicistat, it may be used in adults and children weighing at least 88 lb (40 kg) who meet certain requirements, as determined by a health care provider.
(A darunavir and cobicistat [brand name: Prezcobix] is also available.)tablet containing
For more information on the use of darunavir in people with HIV, please refer to the Guidelines for the Use of Antiretroviral Agents in Adults and Adolescents Living with HIV and the Guidelines for the Use of Antiretroviral Agents in Pediatric HIV Infection.
HIV medicines cannot cure HIV/AIDS, but taking HIV medicines every day helps people with HIV live longer, healthier lives. HIV medicines also reduce the risk of HIV. If you are taking HIV medicines, do not cut down on, skip, or stop taking them unless your health care provider tells you to.
What should I tell my health care provider before taking darunavir?
Before taking darunavir, tell your health care provider:
- If you are allergic to darunavir, sulfonamide (sulfa) medicines, or any other medicines.
- If you have liver problems, including B infection (HBV) or hepatitis C virus infection (HCV).
- If you have high blood sugar ( ) or .
- If you have .
- If you have any other medical conditions.
- If you are pregnant or plan to become pregnant. Talk to your health care provider about the risks and benefits of taking darunavir during pregnancy. For more information on the use of darunavir during pregnancy, please refer to the Recommendations for the Use of Antiretroviral Drugs in Pregnant Women with HIV Infection and Interventions to Reduce Perinatal HIV Transmission in the United States.
- If you are breastfeeding or plan to breastfeed. For women with HIV in the United States, the Guideline does not recommend breastfeeding. Before your baby is born, or if you are already breastfeeding, talk to your health care provider to discuss alternative options for feeding your baby.
- If you are using HIV and Birth Control infographic. -based birth control (such as pills, implants, or vaginal rings). Darunavir may make these forms of birth control less effective. Your health care provider can help you decide how to adjust your birth control while you are taking darunavir. For more information about using birth control and HIV medicines at the same time, view the HIVinfo
- About other prescription and nonprescription medicines, vitamins, nutritional supplements, and herbal products (particularly St. John’s wort) you are taking or plan to take. Darunavir may affect the way other medicines or products work, and other medicines or products may affect how darunavir works. Taking darunavir together with certain medicines or products may cause serious, life-threatening side effects.
How should I take darunavir?
Darunavir comes in the following forms and strengths:
- 75-mg, 150-mg, 600-mg, and 800-mg tablets
- 100-mg/mL oral suspension
Take darunavir according to your health care provider’s instructions.
If your child is prescribed darunavir, follow the instructions for using the drug given to you by their health care provider.
Always take darunavir and either ritonavir or cobicistat in combination with other HIV medicines.
Take (or give) darunavir oral suspension using the oral dosing syringe that comes with the medicine. Shake the oral suspension well before each use. See the “Instructions for Use” that come with darunavir oral suspension for more information about the right way to prepare and take a .
If your or your child's prescribed dose of darunavir oral suspension is more than 6 mL, you will need to divide the dose. Follow the instructions given to you by your health care provider or pharmacist about how to divide the dose. Ask your health care provider or pharmacist if you are not sure how to do this.
If you have taken too much darunavir, contact your health care provider or local poison control center (1-800-222-1222) right away, or go to the nearest hospital emergency room.
For more information on how to take darunavir, see the FDA drug label.
What should I do if I forget a dose?
If you miss a dose of darunavir, take the missed dose as soon as you remember it. But if it is almost time for your next dose, skip the missed dose and just take your next dose at the regular time. Do not take two doses at the same time to make up for a missed dose.
What side effects can darunavir cause?
Darunavir may cause side effects. Some side effects of darunavir can be serious as noted above. Many side effects from HIV medicines, such as nausea or occasional dizziness, are manageable. See the HIVinfo fact sheet on HIV Medicines and Side Effects for more information.
Other possible side effects of darunavir include:
- Diabetes and high blood sugar (hyperglycemia).
- Changes in body fat ( ).
- Changes in your (called or IRIS). IRIS is a condition that sometimes occurs when the immune system begins to recover after treatment with an HIV medicine. As the immune system gets stronger, it may have an increased response to a previously hidden infection.
- Increased bleeding in people with hemophilia.
Tell your health care provider if you have any side effect that bothers you or that does not go away.
These are not all the possible side effects of darunavir. To learn more about possible side effects of darunavir, read the drug label or or talk to your health care provider or pharmacist.
You can report side effects to FDA at 1-800-FDA-1088 (1-800-332-1088) or online.
How should darunavir be stored?
- Store darunavir tablets and oral suspension at room temperature, 77°F (25°C). Keep darunavir oral suspension away from high heat. Do not refrigerate or freeze darunavir oral suspension.
- Keep darunavir in the container that it came in and keep the container tightly closed.
- Do not use darunavir if the original seal over the container opening is broken or missing.
- Throw away darunavir that is no longer needed or expired (out of date). Follow FDA guidelines on how to safely dispose of unused medicine.
- Keep darunavir and all medicines out of reach of children.
Where can I find more information about darunavir?
- For more information on the use of darunavir in people with HIV, please refer to the Guidelines for the Use of Antiretroviral Agents in Adults and Adolescents Living with HIV and the Guidelines for the Use of Antiretroviral Agents in Pediatric HIV Infection.
- This Patient Version drug summary is based on the following FDA label(s): darunavir Oral suspension, tablet (film coated); Prezcobix Tablet, film coated; and cobicistat Tablet (film coated). The Patient Counseling Information section of each label includes information for people taking darunavir.
- Darunavir-related research studies, from .
- A list of FDA-approved HIV medicines, from HIVinfo.
Main number: 800-526-7736
Patient assistance: 800-652-6227
Janssen CarePath: 866-836-0114
Last Reviewed: October 17, 2021