At a Glance (China Coffee Network): Caffeine is the most widely used central-nervous-system stimulant in the world. As consumption of energy drinks, functional snacks and coffee beverages keeps rising, public-health…
Caffeine is the most widely used central-nervous-system stimulant in the world. As consumption of energy drinks, functional snacks and coffee beverages keeps rising, public-health incidents involving excessive caffeine intake and acute poisoning are occurring more often. The U.S. FDA has gradually built a tiered, category-based caffeine regulatory framework, while the U.S. Congress has begun advancing mandatory labeling legislation. In 2026 the FDA formally listed caffeine labeling guidance for foods and beverages as a core annual regulatory priority—tighter oversight and greater information transparency are now a clear direction. Drawing on FDA official announcements, industry guidelines and congressional bills, this article explains U.S. requirements for caffeine in food and the regulatory trend.
1. About caffeine
Caffeine occurs naturally in plant sources such as coffee, tea and cocoa. Synthetic caffeine may be added to foods as a food additive, and the human body metabolizes naturally sourced and artificially added caffeine in the same way. For most people caffeine can be part of a healthy diet, but excessive intake causes adverse effects and large amounts can harm health. What counts as “excessive” varies by individual, depending on body weight, medications taken, specific conditions and personal tolerance.
2. Caffeine requirements for ordinary U.S. foods
In the United States caffeine is a GRAS (Generally Recognized as Safe) substance, and the adult safe reference limit is generally 400 mg per day. On labeling, caffeine must be listed as “caffeine” in the ingredients list only when it is added as a standalone additive; if the caffeine comes from inherently caffeinated raw materials such as chocolate, guarana or tea, only the raw-material name needs to be declared, not caffeine separately. The FDA also makes clear that food companies are responsible for ensuring the safety of caffeine use in their products—like all food additives, caffeine must be safe under the intended use scenario, including expected intake.
The American Beverage Association (ABA) issued its “Energy Drink Marketing Responsible Practices,” encouraging energy-drink labels to show the total caffeine content from all sources: single-serve/single-bottle products should state the total caffeine per container, and multi-serving containers should also state the per-serving amount (example: “Caffeine content: XX mg per 8 fl oz; YY mg per entire bottle”). This figure must be shown separately from the ingredients list and the nutrition facts panel. Energy-drink labels should also carry this warning or equivalent wording: “Not recommended for children, pregnant or breastfeeding women, or people sensitive to caffeine.”
3. Caffeine requirements for U.S. dietary supplements
The FDA does not allow the sale of bulk high-concentration caffeine powder or bulk liquid caffeine, because consumers would have to manually portion out a tiny safe amount from a large package, creating a potential hazard. The FDA permits single-dose caffeinated dietary supplements on the market, provided the caffeine content does not exceed safe thresholds—for instance, products with pre-fixed doses that require no consumer weighing and carry no mis-dosing risk. If a dietary supplement, when taken as recommended on its label, presents a significant, unreasonable risk of illness or death, it is directly classified as adulterated.
4. Regulatory trends for caffeine in food
4.1 The “Sarah Katz Caffeine Safety Act.” In March 2025 a member of the 119th Congress introduced the Sarah Katz Caffeine Safety Act. According to the bill text, any food (including dietary supplements) containing more than 10 mg of caffeine per serving must fully state three items on its label or be in violation: (1) total caffeine in mg per serving; (2) whether the caffeine is naturally endogenous or artificially added; (3) a risk warning that the recommended daily upper limit for healthy adults is 400 mg of caffeine.
4.2 The “Food Labeling Modernization Act of 2026.” In April 2026 a lawmaker proposed amendments to the Food Labeling Modernization Act of 2026. Article 7 covers foods other than dietary supplements: if the total caffeine from all sources in a single serving is at least 10 mg, two items must be prominently displayed near the ingredients list—the milligrams of caffeine per single serving and the serving-size specification.
5. Summary
Although both bills are still at the congressional proposal stage and not yet in force, together with the FDA’s “Human Food Program Regulatory Agenda Work Plan 2026” released on June 29, 2026, it is clear that transparency of caffeine information in food is already a core direction of U.S. food regulation. The FDA has listed the “Draft Industry Guidance for Caffeine Content Labeling in Foods and Beverages” as a key 2026 document; the guidance is expected to cover packaged foods, supermarkets and food-service drinks, giving companies a clear caffeine-labeling standard. Foodmate.net will continue to follow U.S. regulatory updates and share new developments in a timely manner.
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