Monsanto Corporation, the maker of rBST (PosilacĀ®), wrote in a Feb. 2007 letter to the Federal Trade Commission (FTC) titled "Deceptive Milk Labeling and Advertising Concerning rBST," that:

“False and deceptive advertising regarding milk and recombinant bovine somatotropin (‘rBST’) has mislead consumers for years. These practices are clear violations of the Federal Trade Commission Act and result in higher milk prices for consumers and less choice for dairy farmers.

Supplementing dairy cows with rBST increases milk production and has been verified as completely safe for both cows and humans by the Food and Drug Administration…

[C]urrent advertising practices mislead consumers by falsely claiming that there are health and safety risks associated with milk from rBST-supplemented cows. This misleading advertising has created an artificial demand and higher consumer prices for milk from cows not supplemented with rBST. Fueled by the deceptive advertising, milk processors are forcing dairy farmers to discontinue the use of rBST…

Deceptive labeling practices regarding milk from cows supplemented with rBST have allowed a growing number of milk processors to compete unfairly and to mislead consumers. Action by the FTC is needed to ensure that consumer choices are accurately informed and that competition is protected.”

Feb. 2007