The complaints about labelling have come from US fruit growers. P&G says it will remove the "real fruit beverage" description from Sunny Delight labels and replace it with "orange-flavoured citrus punch and other natural flavours".
The new Sunny Delight labels will also show fruits other than oranges and the "Florida-style" variety will be renamed "tangy original".
P&G has agreed to make the changes in the US after the Florida Department of Citrus, as well as the Center for Science in the Public Interest, said that the label was misleading. However, P&G said that its old label was legally accurate by stating that the drink contains 5% fruit juice.
CSPI executive director Michael Jacobson said in April: "There is nothing either sunny or delightful about a junk food that's dressed up as real fruit juice. But Sunny Delight is not much more than sugar water with negligible amounts of juice and a bit of vitamins added."
The change will see the technical description of the product change on US bottles of Sunny Delight. It will no longer use the words "a real fruit beverage". The move does not affect UK packaging, which describes Sunny Delight as a "vitamin-enriched beverage".
When Sunny Delight was launched in the UK in 1998, it was the most successful grocery launch of the 1990s, but subsequently faced criticism over the sugar content and a story that one child had drunk so much of the stuff she had turned orange.
P&G relaunched Sunny Delight in the UK earlier this year.
If you have an opinion on this or any other issue raised on Brand Republic, join the debate in the Forum here.