The Sarah Katz Caffeine Safety Act mandates clearer caffeine labeling for restaurant chains and packaged foods, requiring warnings for items exceeding 150mg of caffeine. It also directs the FDA and NIH to conduct urgent safety reviews concerning caffeine consumption in the general population and vulnerable groups. Furthermore, the bill establishes a public education campaign on safe caffeine use and requires a GAO study on the marketing of caffeinated beverages, particularly toward youth.