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Efavirenz is an antiviral used to prevent multiplication of HIV virus. It is not a cure for HIV/AIDS. It is intended for use by patients who are at least 3 months old and weigh 8 lbs.
Take on empty stomach at bedtime. Must be taken in combination with other antivirals. If you consumed this drug through opening it and sprinkling the contents into something else, do not eat for 2 hours.
Do not use if you also use elbasvir and grazopevir for hepatitis C. Do not take Atripla. Do not use if pregnant. Hormonal contraception may be less effective during efavirenz treatment. Inform doctor of all known conditions and medications. Avoid driving until you know how this drug affects you reactions. Alcohol may increase side effects.
Get medical attention immediately if you experience serious symptoms like: allergic reaction symptoms, severe skin reaction, seizure, liver problems. Psychiatric side effects include: confusion, hopelessness, suicidal thoughts, paranoia, anxiety, speech problems. Inform doctor if you notice: signs of new infection, speech and swallowing problems, eye and balance problems, enlarged thyroid, impotence, menstrual changes. Other side effects include: nausea and vomiting, rash, dizziness, drowsiness, headache, fatigue, insomnia, strange dreams, body fat distribution.