Diamond V Mills is a US manufacturer located in Cedar Rapids, Iowa. They have been a world leader in making all-natural, research proven nutritional frmentation products (such as yeast) since 1943. Their XPC yeast is a feed ingredient produced by fermenting selected liquid and cereal grain raw ingredients with bakers yeast (Saccharomyces cerevisiae) and drying the entire culture-media without destroying the yeast factors, B-vitamins and other fermentation products. It can be used in a wide variety of animal feeds including dairy, swine, beef, horse, poultry and petfoods. XPC Green™ Yeast Culture offers all the features and quality present in our standard Diamond V XPC product but is for use in organic production by virtue of the OMRI listing. The Organic Materials Review Institute is an independent agency that reviews and evaluates products for use under the USDA's National Organic Program Rule (NOP) for certified organic production. XPC Green is specifically formulated for use in organic rations. All ingredients used in production are certified organic. Product of the USA.