Sustiva (Efavirenz) is a prescription antiviral medication that is used with other HIV medications for the treatment of HIV, the virus that causes AIDS. Efavirenz belongs to a class of drugs known as non-nucleoside reverse transcriptase inhibitors (NNRTIs). This medication is used to prevent human immunodeficiency virus (HIV) from multiplying in your body. It works by decreasing the amount of HIV in your body so your immune system can work better. Sustiva is not a cure for HIV infection.

Manufacturer Information

The brand Sustiva is available from Canada manufactured by Bristol-Myers-Squibb and from Turkey also called Stocrin manufactured by MSD. The generic Efavirenz comes from India also called Efavir manufactured by Cipla and from Canada manufactured by a different manufacturer.

The common side effects of Sustiva may include:

Blurred vision;
Constipation;
Cough;
Diarrhea;
Drowsiness;
Feeling tired;
Headache;
Insomnia;
Muscle or joint pain;
Stomach pain;
Trouble concentrating

Many people using this medication do not have any serious side effects.

This is not a complete list of side effects and others may occur. Please call your doctor if you have any further concerns and questions.

You should not take Sustiva if you are allergic to Efavirenz or if you have any other allergies. Before you start taking this medication, talk to your doctor about your medical history and about all the medications you take including OTC and herbal medications. Avoid alcoholic beverages. Talk to your doctor if you use marijuana. This medication may make you dizzy. You should not drive, use machinery or do any activity that requires you to be alert. Avoid alcoholic beverages. Sustiva should only be used during pregnancy unless it is clearly needed. This medication passes into breast milk. Do not breast-feed while you are taking this medication because breast milk can transmit HIV.

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