Efavirenz is an antiretroviral medication used to treat and prevent HIV/AIDS. It is often prescribed in combination with other antiretroviral drugs. Efavirenz works by reducing the amount of HIV in the body. It does not cure HIV/AIDS, but it may decrease your chance of developing acquired immunodeficiency syndrome (AIDS) and HIV-related illnesses.

Efavirenz FAQ


What is Efavirenz?

Efavirenz is an antiretroviral medication used to treat and prevent HIV/AIDS.

How does Efavirenz work?

Efavirenz works by reducing the amount of HIV in the body.

What are the common side effects of Efavirenz?

Common side effects may include dizziness, trouble sleeping, tiredness, and rash.

What should I discuss with my healthcare provider before taking Efavirenz?

Tell your doctor about all your medical conditions and the medications you are taking.

How should I take Efavirenz?

Follow all directions on your prescription label. Do not take this medicine in larger or smaller amounts or for longer than recommended.

What should I avoid while taking Efavirenz?

Avoid driving or operating machinery until you know how this medicine will affect you.

Can Efavirenz be used during pregnancy?

Efavirenz may cause harm to an unborn baby. Use effective birth control to prevent pregnancy.

What happens if I miss a dose of Efavirenz?

Take the missed dose as soon as you remember. Skip the missed dose if it is almost time for your next scheduled dose.

What are the storage requirements for Efavirenz?

Store at room temperature away from moisture and heat.

Can Efavirenz interact with other medications?

Tell your doctor about all your other medicines, especially: triazolam, midazolam, voriconazole, and St. John's wort.

Is Efavirenz safe for children?

The safety and effectiveness of Efavirenz have not been established in children under the age of 3 months.

How long does it take for Efavirenz to start working?

It may take several weeks before you experience the full benefits of Efavirenz.

Can Efavirenz cure HIV/AIDS?

Efavirenz helps manage the symptoms of HIV/AIDS but does not cure the disease.

Is Efavirenz available over the counter?

No, Efavirenz is available only with a prescription from a healthcare provider.

What should I do if I overdose on Efavirenz?

Seek emergency medical attention or call the Poison Help line.

What are the potential long-term effects of taking Efavirenz?

Long-term effects can include changes in body fat distribution, increased cholesterol, and increased blood sugar levels.

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Information provided by Ms. Elena Owyong. Reviewed by Mr. Dean Koh