O'Fallon Beers - unless otherwise listed is Vegan Friendly

Company email (December 2022)
"The only animal ingredient we use in our process and fining is Lactose. We use it as a non-fermentable sweetener in the following beers: Dads Oatmeal Cookie Stout, Pumpkin Cheesecake, Pumpkin Chai Latte, Salted Caramel Pumpkin, Vanilla Wafer Cookie, All the Gummy Beers, and it will be in two new Cookie Tin offerings Gooey Butter and Snickerdoodle. All of these beers should be clearly marked on the label that they contain lactose "

Update: January 2010
Company Email:
"We do use gelatin in our O'Fallon Gold bottles. I recently had to start
using it in the Gold only at our brewery in Wisconsin because that beer is filtered, but we do not use it on the Gold draft that is produced in
O'Fallon. Every other beer that we do here and in WI is free of any animal
products or processing aids."

Company Email:
"Thanks for the inquiry about our beers being Vegan friendly. This is a point that has been raised before and I am happy to tell you that we try to stay as natural as possible when producing our craft beers.
There are four basic ingredients in all of our beers: water, malted grains, hops and yeast. We used to filter our beer using D.E. filter pads, which are the industry standard and these pads did contain the skeletal remains of diatoms, which are usually microscopic unicellular organisms (not animals), but we have since switched to a fiber based pad that does not contain diatomaceous earth. I am happy to say that I think you are safe to drink all of our beers and continue safely on your vegan path."