[3] Kraft Singles do not qualify for the "Pasteurized Process Cheese" labeling,[4] as the percentage of milkfat in the product that comes from the added dairy ingredients is greater than 5%.

Kraft had used label "Pasteurized Process Cheese Food", which allows for a greater percentage of added dairy, until the FDA gave a warning in December 2002 stating that Kraft could not legally use that label any longer due to a formulation change that replaced some of the non-fat milk in the recipe with milk protein concentrate, which is not a permitted additive.

Kraft complied with the FDA order by changing the label to the current "Pasteurized Prepared Cheese Product".

The campaign was criticized for its implications that each slice contained the same amount of calcium as a five-US-fluid-ounce (150 ml) glass of milk and also more calcium than imitation cheese slices, which eventually led to a ruling by the Federal Trade Commission in 1992 that ordered Kraft to stop making the misrepresentations in its advertising.

[9] As of 2019[update], though around 40 percent of households in the United States continue to buy Kraft Singles, sales have been flat.