What are the most important things to know about tenofovir disoproxil fumarate?
Tenofovir disoproxil fumarate (tenofovir DF) can cause serious, life-threatening side effects. These include a buildup ofin the blood ( ), severe problems, and new or worsening kidney problems, including kidney failure.
Contact your health care provider right away if you have any of the following symptoms that could be signs of lactic acidosis:
- Weakness or being more tired than usual
- Unusual muscle pain
- Shortness of breath or fast breathing
- Stomach pain with nausea or vomiting
- Cold or blue hands or feet
- Dizziness or lightheadedness
- Fast or abnormal heartbeat
- 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
- Stomach-area pain
If you have(HBV) and take tenofovir DF, your HBV may get much worse (flare up) if you stop taking tenofovir DF. Do not stop taking tenofovir DF without first talking to your health care provider.
Some people taking tenofovir DF have developed new or worsening kidney problems, including kidney failure. Your health care provider may tell you to take tenofovir DF less often or to stop taking tenofovir DF if you experience new or worsening kidney problems.
While taking tenofovir DF, it is important to keep all of your appointments with your health care provider.
What is tenofovir disoproxil fumarate?
Tenofovir disoproxil fumarate (tenofovir DF) is a prescription medicine approved by the U.S.(FDA) for the treatment of HIV infection in adults and children 2 years of age and older who weigh at least 22 lb (10 kg). Tenofovir DF is always used in combination with other HIV medicines.
HIV medicines can't 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, don't cut down on, skip, or stop taking them unless your health care provider tells you to.
Tenofovir DF is also approved by FDA for the treatment of chronic HBV section of the Guidelines for the Prevention and Treatment of Opportunistic Infections in Adults and Adolescents with HIV.B infection (HBV) in adults and children 2 years of age and older who weigh at least 22 lb (10 kg). For information on the use of tenofovir DF in people with HIV and HBV, please refer to the
What should I tell my health care provider before taking tenofovir disoproxil fumarate?
Before taking tenofovir DF, tell your health care provider:
- If you are allergic to tenofovir DF or any other medicines.
- If you have liver problems, including HBV.
- If you have kidney problems or receive kidney dialysis treatment.
- If you have bone problems.
- 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 tenofovir DF during pregnancy.
- If you are breastfeeding or plan to breastfeed. Do not breastfeed if you have HIV or are taking tenofovir DF.
- If you are using HIV and Birth Control infographic. -based birth control (such as pills, implants, or vaginal rings). 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 you are taking or plan to take. Tenofovir DF may affect the way other medicines or products work, and other medicines or products may affect how tenofovir DF works. Taking tenofovir DF together with certain medicines or products may cause serious, life-threatening side effects.
How should I take tenofovir disoproxil fumarate?
Tenofovir DF (brand name: Viread) comes in the following forms and strengths:
- 150-mg tablets
- 200-mg tablets
- 250-mg tablets
- 300-mg tablets
- Oral powder (40 mg of tenofovir DF per 1 g of powder)
Take tenofovir DF according to your health care provider's instructions.
Tenofovir DF tablets should be swallowed whole and can be taken with or without food. People who are unable to swallow the tablets whole may take the oral powder. Use the provided dosing scoop to measure the oral powder. Mix the oral powder with soft foods that can be swallowed without chewing, such as applesauce, baby food, or yogurt. Do not mix the oral powder with liquid, as the powder may float to the top even after stirring. Take theof oral powder right after mixing it.
Always take tenofovir DF in combination with other HIV medicines.
If you take too much tenofovir DF, 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 tenofovir DF, see the FDA drug label.
What should I do if I forget a dose?
If you miss a dose of tenofovir DF, 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 tenofovir disoproxil fumarate cause?
Tenofovir DF may cause side effects. 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.
Some side effects of tenofovir DF can be serious. Serious side effects of tenofovir DF include a buildup of lactic acid in the blood (lactic acidosis), severe liver problems, and new or worsening kidney problems, including kidney failure. (See section above: What are the most important things to know about tenofovir disoproxil fumarate?)
Other possible side effects of tenofovir DF include:
- 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.
- Bone problems, including bone pain, or softening or thinning of the bones ( ), which may lead to fractures.
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 tenofovir DF. To learn more about possible side effects of tenofovir DF, read the drug label oror 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 tenofovir disoproxil fumarate be stored?
- Store tenofovir DF at room temperature, 68°F to 77°F (20°C to 25°C).
- Keep tenofovir DF in the container that it came in and keep the container tightly closed.
- Do not use tenofovir DF if the original seal over the container opening is broken or missing.
- Throw away tenofovir DF that is no longer needed or expired (out of date). Follow FDA guidelines on how to safely dispose of unused medicine.
- Keep tenofovir DF and all medicines out of reach of children.
Where can I find more information about tenofovir disoproxil fumarate?
More information about tenofovir DF is available:
- The tenofovir DF drug label. The Patient Counseling Information section of the label includes information for people taking tenofovir DF.
- Recommendations on the use of tenofovir DF in people with HIV and HBV, from the Guidelines for the Prevention and Treatment of Opportunistic Infections in Adults and Adolescents with HIV, prepared by the , the , and the HIV Medicine Association of the Diseases Society of America.
- Tenofovir DF-related research studies, from .
- A list of FDA-approved HIV medicines, from HIVinfo.
Gilead Sciences, Inc.
Main number: 800-445-3235
Patient assistance: 800-226-2056
The above Patient Version drug summary is based on the following FDA label(s): Powder, tablet (coated).
Last Reviewed: April 27, 2020