Sugar growers and consumer groups claim the maker of the sugar substitute Splenda uses misleading advertising claims and marketing practices to promote their product.
They say the slogan "Made from Sugar, So it Tastes Like Sugar," confuses consumers into believing that Splenda contains real, all-natural sugar.
Splenda is a highly processed chemical substance called sucralose, which is manufactured in a chemical plant, the group said in a press release.
They want the U.S. Federal Trade Commission to investigate the advertising claims.
Splenda which is marketed by McNeil Nutritionals is a division of Johnson and Johnson.
"Splenda is not grown in a field.
It is made from a chemical process in an industrial plant," said Andy Briscoe, president of the U.S. Sugar Association.
A spokesperson for McNeil Nutritionals says sugar is used to make one of the ingredients in Splenda.
The company has filed court papers against the Sugar Association for claims it made against Splenda.