This is perhaps the best-selling protein in America.
Optimum Nutrition claims “No Artificial Growth Hormones”▲ BUT footnoted……
▲No significant difference has been shown between milk derived from RBST-treated and non-RBST treated cows.
Which implies that it is not claiming their product is RBST (or rBGH) free. The fact is that US milk products, if not organic, are most likely produced from cows treated with rBGH, a genetically-modified hormone (produced by Monsanto) used to increase milk production. The US government has approved its use since 1992 whereas virtually all other countries ban it.