Which of the following is true concerning breastfeeding and lorazepam?

The statement regarding lorazepam highlights that it has the highest concentration in breastmilk, which is an important consideration for breastfeeding mothers. Lorazepam is a benzodiazepine that can transfer into breastmilk, and it is known that various medications have different levels of concentration in breastmilk depending on their properties and molecular weight. When a breastfeeding mother takes lorazepam, the baby is exposed to the drug, which can potentially lead to adverse effects, including sedation or withdrawal symptoms in the infant.

Understanding the dynamics of how medications pass into breastmilk is crucial for ensuring both maternal mental health and infant safety. While some medications may be considered safer and have lower concentrations in breastmilk, lorazepam's higher concentration necessitates careful assessment before use in breastfeeding mothers.

In this context, the other statements do not effectively represent the nuances of breastfeeding while taking lorazepam, thus reinforcing the importance of understanding the implications of medication use during this critical time.