By law serving size on beverage food labels?

By law, serving sizes on beverage food labels are determined based on standard measurements that reflect how much people typically consume in one sitting. The U.S. Food and Drug Administration (FDA) requires these serving sizes to be realistic, allowing consumers to make informed choices about their dietary intake. Labels must also indicate the number of servings per container, enabling consumers to understand the total caloric and nutritional content. This regulation aims to promote transparency and help individuals manage their nutrition effectively.