Atenolol during pregnancy and lactation

The use of atenolol during pregnancy is generally not recommended, particularly during the first trimester. Atenolol, like other beta-blockers, may potentially cause harm to the fetus. Studies have suggested that atenolol use during pregnancy may be associated with an increased risk of fetal growth restriction, low birth weight, and other adverse outcomes.

Pregnancy     Category D       ( by FDA )

                       Category  D       (AU TGA )

The Australian categorization system does not use alphabetical categories like the FDA. Instead, medications are classified according to risk factors. For atenolol, it's generally recommended to avoid use during pregnancy unless the potential benefits outweigh the risks, and it's prescribed under strict medical supervision.

If a breastfeeding woman requires treatment with atenolol, healthcare providers may recommend monitoring the infant for any potential side effects, particularly if the infant shows signs of slow heart rate or low blood pressure. Alternatively, healthcare providers may consider alternative medications that are safer during breastfeeding.