Postpartum parents lack real-time data on how medications like acetaminophen transfer into breast milk, posing a risk of infant liver toxicity. To solve this, USC researchers developed a wearable smart lactation pad with sensors and electrodes. This device provides immediate, personalized analysis of milk safety during daily routines. By replacing slow, costly lab tests with instant insights, it empowers families to make informed breastfeeding decisions and protects infant health.