The formulations are different, including sugar and salt levels and the UK version has been produced with natural food additives and flavourings which will account for the differences in appearance and taste between the two products.' The UK Froot Loops are also larger in size compared with their American counterparts, and due to the different method of formulation, are a much coarser cereal. Kellogg's stated that 'due to European legislation we have been unable to produce Froot Loops to the same specifications as the US product. The recipe also differed from the US version. In the middle of 2012, Kellogg's introduced Froot Loops to the UK market for a limited time with only the secondary colors (orange, green, and purple), as natural color substitutes for red, yellow, and blue could not be found. Their slogan was 'Super-sized bites with deliciously intense natural fruit flavors'.'Flavor Bursting!' Froot Loops-branding by Kellogg's was also used with the Froot Loops cereal bar.

Snack Ums were similar to the cereal but larger. Kellogg's made several varieties of snack foods, including snack bags called Snack Ums.

Toucan Sam was first voiced by Mel Blanc, originally beginning with an 'American accent' and later changing to a 'British accent'. While toucans have a sense of smell, as most other birds, he is portrayed as having an uncanny ability to smell Froot Loops from great distances and locates a concealed bowl of the cereal while intoning 'Follow my nose! It always knows!' or 'Follow my nose! For the fruity taste that shows!' Toucan Sam is a blue anthropomorphic toucan the colors of his bill correspond to the three original Froot Loop colors. Toucan Sam has been the mascot of Froot Loops since its first appearance. Although the marketing side of Kellogg's misleadingly sold the idea that each individual loop color was a different flavor, Kellogg's has acknowledged that all share the same fruit-blend flavor. Different methods of production are used in the UK where, due to the lack of natural colourings for yellow, red and blue, Froot Loops are purple, green and orange, and the loops are also larger in size.

Originally, there were only red, orange and yellow loops, but green, blue and purple were added during the 1990s. Kellogg's introduced Froot Loops in 1963. †Percentages are roughly approximated using US recommendations for adults.

Price of fruit loops