Who should not take efavirenz?

Do not use efavirenz if you are pregnant. It could harm the unborn baby or cause birth defects. Use 2 forms of birth control, including a barrier form (condom, diaphragm, cervical cap, or contraceptive sponge) to prevent pregnancy while you are using efavirenz and for at least 12 weeks after your last dose.Nov 22, 2019

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