Which label term indicates the highest quantity of a nutrient per serving?

The term "Extra" is commonly used on food labels to indicate that a product contains a higher quantity of a specific nutrient compared to standard versions of the same food. This designation suggests that the nutrient is added or concentrated beyond the usual amount found in the food item. For example, if a product is labeled as "extra vitamin C," it means it has a significant increase in vitamin C content, thus informing consumers that they are getting a greater nutritional benefit from that serving.

In contrast, terms like "Organic," "Natural," and "Added" do not necessarily convey a specific quantity of a nutrient. "Organic" relates to how the product is produced and processed without synthetic pesticides or fertilizers, "Natural" typically indicates that a product contains no artificial ingredients or added colors, but it doesn't guarantee any particular nutrient level. "Added" refers to nutrients that have been included in the product, but without the strong implication of increased quantity that "Extra" provides. Therefore, "Extra" is the most definitive term indicating a higher nutrient content per serving.