Written by a world-renowned expert in perinatal pharmacology, this essential reference contains current, complete, and evidence-based information on the transmission of maternal drugs into human milk. Because so many women ingest medications while breastfeeding, one of the most common questions encountered in pediatrics is: Which drugs are safe and which are hazardous for the infant? This 2019 edition has been extensively revised, and now includes 39 completely new and 331 updated medications, and state-of-the-art coverage of multiple diseases, vaccines, and syndromes. It addresses the use of radiopharmaceuticals, chemotherapeutic agents