To confront the growing problem of obesity and overweight in Argentina, PASB aided national authorities in developing, adopting, and implementing a healthy eating law. The law incorporates best practices on front-of-package warning labels and adopts the food classification tools agreed to by PAHO Member States. After the law’s adoption in December 2021, and with support from PASB for its implementation, octagonal front-of-package regulation labels have been printed on products since September 2022. Following PAHO’s Nutrient Profile Model, the labels indicate products with excessive levels of sugars, sodium, fats, and trans-fatty acids, providing information to consumers before they make their purchasing choices. The regulation is expected to have long-lasting effects in terms of healthy diets and improved nutrition and health outcomes. Years of advocacy and coordination between PASB and the Ministry of Health, as well as partnerships with organizations like UNICEF and FAO, and the sharing of experiences from other countries like Chile, generated momentum for this policy change.