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Efavirenz/Emtricitabine/Tenofovir, Oral e-FAV-e-renz em-try-SY-ta-been te-NOH-foh-veer

What are other names for this medicine?

Type of medicine: antiretroviral (anti-HIV)

Generic and brand names: efavirenz/emtricitabine/tenofovir, oral; Atripla

What is this medicine used for?

This medicine is a combination of 3 medicines in each tablet. It is taken by mouth to treat HIV infection. It will not cure HIV or AIDS but may slow the progression of the disease. This medicine may be taken alone or with other medicines to treat HIV infection.

What should my healthcare provider know before I take this medicine?

Tell your healthcare provider if you have ever had:

  • an allergic reaction to any medicine
  • bleeding disorders
  • bone problems such as osteoporosis
  • diabetes
  • heart disease
  • liver disease such as hepatitis B or hepatitis C
  • high cholesterol
  • kidney or liver disease
  • mental illness such as depression, bipolar disorder, or paranoia
  • problems with substance abuse
  • seizures

This medicine may interact with many other medicines. This medicine may change the effect of other medicines, including the ones for HIV, and may cause serious side effects. Your healthcare provider may change your other medicines or change their doses. Other medicines, including herbal products, may affect this medicine. For this reason, it is very important to tell your healthcare providers and pharmacists all the medicines, natural remedies, or vitamins you take.

Females of childbearing age: This medicine is not usually given to pregnant women because it can harm the baby. If you are pregnant, tell your healthcare provider. Do not become pregnant during treatment with this medicine. This medicine may make hormonal birth control less effective. You should use 2 reliable birth control methods (including a barrier method, such as a diaphragm or condom) while you are taking this medicine and for 12 weeks after stopping it. Talk with your healthcare provider about effective birth control methods. If you become pregnant, contact your healthcare provider right away. Do not breast-feed while you are taking this medicine.

How do I take it?

Check the label on the medicine for directions about your specific dose. Take this medicine exactly as your healthcare provider prescribes. Do not take more or less or take it longer than prescribed. Do not stop taking this medicine without your healthcare provider's approval. The amount of virus in your blood may increase if the medicine is stopped for even a short time. The virus may develop resistance to this medicine and become harder to treat.

Take this medicine 30 minutes before or 2 hours after meals. Take it with a full glass of water. Do not take this medicine with meals that are high in fat.

This medicine may make you dizzy or drowsy. Take it at bedtime for the first few weeks. Do not drive or operate machinery unless you are fully alert.

What if I miss a dose?

If you miss a dose, take it as soon as you remember unless it is time for your next dose (the next day). Do not double the dose the next day. If you are not sure of what to do if you miss a dose, or if you miss more than one dose, contact your healthcare provider.

What if I overdose?

If you or anyone else has intentionally taken too much of this medicine, call 911 or go to the emergency room right away. If you pass out, have seizures, weakness or confusion, or have trouble breathing, call 911. If you think that you or anyone else may have taken too much of this medicine, call the poison control center. Do this even if there are no signs of discomfort or poisoning. The poison control center number is 800-222-1222.

Symptoms of an acute overdose may include: uncontrolled muscle movements, confusion, loss of balance, sudden change in behavior, thoughts of suicide.

What should I watch out for?

Your healthcare provider may prescribe calcium and vitamin D supplements while you are taking this medicine. Follow your healthcare provider's instructions about exercise, diet, and taking vitamin supplements.

You need to have lab tests regularly to see how this medicine affects you. You may also need bone scans or X-rays to see if the medicine is affecting your bones. Keep all appointments for tests.

Lactic acidosis is a rare but serious complication that can occur with use of this medicine. This condition is caused by a buildup of lactic acid in the blood. The symptoms of lactic acidosis are:

  • feeling weak or tired
  • unusual muscle pain
  • having trouble breathing
  • feeling cold
  • feeling dizzy or lightheaded
  • suddenly developing a slow or irregular heartbeat

This medicine may also cause liver damage in some people. Contact your provider right away if you have symptoms of liver damage such as dark urine, yellowing of the skin and eyes, unexplained tiredness, pain in the upper right part of the stomach, loss of appetite, nausea, or vomiting.

You may develop a rash. This usually goes away without any change in treatment. Occasionally, the rash becomes serious. Report any rash to your healthcare provider right away.

If you need emergency care, surgery, or dental work, tell the healthcare provider or dentist you are taking this medicine.

This medicine may cause dizziness, depression, or drowsiness. These symptoms often go away as your body adjusts to the medicine. Taking this medicine at night may help to make these symptoms less bothersome. Do not drive or operate machinery unless you are fully alert.

This medicine may increase the effects of alcohol and other drugs that affect your nervous system. Do not drink alcohol or take other medicines unless your healthcare provider approves.

Your body fat may change as a result of taking this medicine. Your legs and arms may be thin but your chest, belly, back and face may have more fat. Discuss this with your healthcare provider.

This medicine may cause nausea or vomiting. Eating several small meals a day, sucking lozenges, or chewing gum may help.

This medicine does not reduce the risk of passing HIV to others through sexual contact or blood contamination. Continue to practice safe sex and do not share needles.

Diabetics: This medicine may affect your blood sugar level and change the amount of insulin or other diabetes medicines you may need. Talk to your healthcare provider about this.

What are the possible side effects?

Along with its needed effects, your medicine may cause some unwanted side effects. Some side effects may be very serious. Some side effects may go away as your body adjusts to the medicine. Tell your healthcare provider if you have any side effects that continue or get worse.

Life-threatening (Report these to your healthcare provider right away. If you are unable to reach your healthcare provider right away, get emergency medical care or call 911 for help): Allergic reaction (hives, itching, rash, tightness in your chest, swelling of your lips, tongue or throat, trouble breathing).

Serious (Report these to your healthcare provider right away): Depression that does not go away; hallucinations; strange thoughts or angry behavior; thoughts of suicide; serious rash with a fever; blistering; mouth sores; red eyes; swelling; muscle pain or joint pain; decreased urination; pain when urinating; dark urine; yellowing of your eyes or skin; unexplained fever; unusual tiredness or weakness; trouble breathing; fainting; severe stomach pain; severe nausea or vomiting.

Other: Numbness or pain in arms or legs, indigestion, stomach pain, gas, diarrhea, loss of appetite, nausea, trouble sleeping, dizziness, drowsiness, abnormal dreams, trouble concentrating, headaches, sweating, changes in body fat, skin discoloration of the hands or feet, back pain, nervousness, runny nose.

What products might interact with this medicine?

When you take this medicine with other medicines, it can change the way this or any of the other medicines work. Nonprescription medicines, vitamins, natural remedies, and certain foods may also interact. Using these medicines together might cause harmful side effects. Talk to your healthcare provider if you are taking:

  • alfuzosin (Uroxatral)
  • antibiotics such as clarithromycin (Biaxin), erythromycin (Ery-Tabs, E.E.S.), rifabutin (Mycobutin), rifampin (Rifadin, Rimactane), and rifapentine (Priftin)
  • antiseizure medicines such as carbamazepine (Tegretol), phenobarbital, and phenytoin (Dilantin)
  • antidepressants such as fluoxetine (Prozac, Sarafem), fluvoxamine (Luvox), nefazodone, paroxetine (Paxil), and sertraline (Zoloft)
  • antifungal medicines such as caspofungin (Cancidas), itraconazole (Sporanox), ketoconazole (Nizoral), posaconazole (Noxafil), and voriconazole (Vfend)
  • antiviral medicines such as acyclovir (Zovirax), adefovir (Hepsera), cidofovir (Vistide), ganciclovir (Cytovene), maraviroc (Selzentry), valacyclovir (Valtrex), and valganciclovir (Valcyte)
  • benzodiazepines such as alprazolam (Xanax), midazolam (Versed), and triazolam (Halcion)
  • birth control pills, patches, vaginal rings, and shots (talk to your healthcare provider if you need birth control)
  • calcium channel blockers such as amlodipine (Norvasc), diltiazem (Cardizem, Dilacor), felodipine, nifedipine (Procardia, Adalat), and verapamil (Calan, Isoptin)
  • cholesterol-lowering medicines (statins) such as atorvastatin (Lipitor), lovastatin (Mevacor), pravastatin (Pravachol), rosuvastatin (Crestor), and simvastatin (Zocor)
  • immunosuppressants such as cyclosporine (Gengraf, Sandimmune, Neoral), sirolimus (Rapamune), and tacrolimus (Prograf)
  • medicines to treat diabetes such as glimepiride (Amaryl), glipizide (Glucotrol), and nateglinide (Prandin)
  • medicines to treat migraine headaches such as dihydroergotamine (D.H.E. 45), eletriptan (Relpax), ergotamine (Ergomar, Cafergot, Ercaf), and methylergonovine (Methergine)
  • methadone (Dolophine)
  • other anti-HIV medicines such as abacavir/lamivudine (Epzicom), abacavir/lamivudine/zidovudine (Trizivir), atazanavir (Reyataz), didanosine (Videx, Videx EC), efavirenz (Sustiva), emtricitabine (Emtriva), emtricitabine/tenofovir (Truvada), indinavir (Crixivan), lamivudine (Epivir, Epivir-HBV), lamivudine/zidovudine (Combivir), lopinavir/ritonavir (Kaletra), nelfinavir mesylate (Viracept), ritonavir (Norvir), saquinavir (Invirase), tenofovir (Viread), and zidovudine (AZT, Retrovir)
  • pimozide (Orap)
  • St. Johns wort
  • warfarin (Coumadin)

The effects of this medicine may be increased if you take it with grapefruit juice. Talk with your healthcare provider about this.

Do not drink alcohol while taking this medicine unless your healthcare provider approves.

If you are not sure if your medicines might interact, ask your pharmacist or healthcare provider. Keep a list of all your medicines with you. List all the prescription medicines, nonprescription medicines, supplements, natural remedies, and vitamins that you take. Be sure that you tell all healthcare providers who treat you about all the products you are taking.

How should I store this medicine?

Store this medicine at room temperature. Keep the container tightly closed. Protect it from heat, high humidity, and bright light.


This advisory includes selected information only and may not include all side effects of this medicine or interactions with other medicines. Ask your healthcare provider or pharmacist for more information or if you have any questions.

Ask your pharmacist for the best way to dispose of outdated medicine or medicine you have not used. Do not throw medicine in the trash.

Keep all medicines out of the reach of children.

Do not share medicines with other people.


Developed by RelayHealth.
Medication Advisor 2012.1 published by RelayHealth.
Last modified: 2011-10-14
Last reviewed: 2010-04-29
This content is reviewed periodically and is subject to change as new health information becomes available. The information is intended to inform and educate and is not a replacement for medical evaluation, advice, diagnosis or treatment by a healthcare professional.
© 2012 RelayHealth and/or its affiliates. All rights reserved.
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