<p><strong>Category D</strong>: There is positive evidence of human fetal risk, but the benefits from use in pregnant women may be acceptable despite the risk (e.g., if the drug is needed in a life-threatening situation or for a serious disease for which safer drugs cannot be used or are ineffective).<br />
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<strong>Lactation</strong>: Efavirenz may pass through breast milk and cause serious harm to the baby. It should not be used during lactation.</p>