 NPR cited this as an example of fearmongering and lack of subject matter knowledge, as isinglass, derived from fish swim bladders, has been used as a natural fining agent in food and drink for centuries, and is in any case used primarily in cask ale, not vat-brewed beers, which are normally cleared by filtering.The day after she posted her petition, Anheuser-Busch and MillerCoors released ingredients in many of their products.The trade publication "Beer Marketer's Insights" called Hari's petition an "attempt of fear mongering in the name of advocacy."