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Pregnancy: Pregnancy Category B. The safe use of acetylcysteine during pregnancy has not been established. Acetylcysteine should be used in pregnancy only if the potential benefit justifies the potential risk to the fetus.
Lactation: It is not known whether acetylcysteine is excreted in human milk. Therefore, do not administer to breastfeeding women unless, in the opinion of a physician, the potential benefit of the product justifies the possible risk.
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