No information is available about the influence of this substance on the infant exposed through breast milk. The derived racemic zopiclone, seems to have little influence on the infant when taken occasionally, although, strictly speaking, the data can not be extrapolated. For this reason, it is preferable to use another hypnotic, particularly when it is a small or premature infant.
Warning of the manufacturer:
It is unknown if this medicine is excreted in breast milk. Because many drugs do so, caution should be exercised when administered to a nursing mother.