Tenofovir

Why this is used

Tenofovir is used in combination with other antiviral medications to treat human immunodeficiency virus (HIV) in patients with acquired immunodeficiency syndrome (AIDS). Tenofovir is in a class of antiviral medications called reverse transcriptase inhibitors. It works by slowing the spread of HIV in the body. Tenofovir is not a cure and may not decrease the number of HIV-related illnesses. Tenofovir does not prevent the spread of HIV to other people.

How to take it

Tenofovir comes as a tablet to take by mouth. It is usually taken once a day with a meal. Follow the directions on your prescription label carefully, and ask your doctor or pharmacist to explain any part you do not understand. Take tenofovir exactly as directed. Do not take more or less of it or take it more often than prescribed by your doctor. Continue to take tenofovir even if you feel well. Do not stop taking tenofovir without talking to your doctor.

Side effects

<p></p> <p></p> <p></p> <p>Tenofovir may cause side effects. Tell your doctor if any of these symptoms are severe or do not go away:

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upset stomach</li>
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diarrhea</li>
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vomiting</li>
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gas</li>
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loss of appetite</li></ul></p> <p></p> <p>Some side effects can be serious. If you experience any of those listed in the IMPORTANT WARNING section, call your doctor immediately.Tenofovir may cause other side effects. Call your doctor if you have any unusual problems while taking this medication.If you experience a serious side effect, you or your doctor may send a report to the Food and Drug Administration's (FDA) MedWatch Adverse Event Reporting program online [at <a href='http://www.fda.gov/Safety/MedWatch'>http://www.fda.gov/Safety/MedWatch</a>] or by phone [1-800-332-1088].</p>

Precautions

Before taking tenofovir, tell your doctor and pharmacist if you are allergic to tenofovir or any other medications. tell your doctor and pharmacist what prescription and nonprescription medications, vitamins, nutritional supplements, and herbal products you are taking. Be sure to mention any of the following: antiviral medications such as acyclovir (Zovirax), cidofovir (Vistide), ganciclovir (Cytovene, Vitasert), valacyclovir (Valtrex), and valganciclovir (Valcyte); aspirin and other nonsteroidal antiinflammatory medications (NSAIDs) such as indomethacin (Indocin); didanosine (Videx); diuretics ('water pills'); penicillin (Pen Vee K, Veetids, others); and probenecid (Benemid). Your doctor may need to change the doses of your medications or monitor you carefully for side effects. if you are taking didanosine (Videx), take it 1 hour before or 2 hours after tenofovir. in addition to the condition listed in the IMPORTANT WARNING section, tell your doctor if you have or have ever had kidney disease. you should be aware that your body fat may increase or move to different areas of your body, such as your breasts and your upper back.

Overdose

In case of overdose, call your local poison control center at 1-800-222-1222. If the victim has collapsed or is not breathing, call local emergency services at 911.
Educational reference only — talk to a pharmacist or prescriber about Tenofovir.