Whole Food Dietary Supplement. Goatein IG is a high quality protein made from goat"s milk and one of the only supplements containing fermented protein with immunoglobulin G. Goatein Ig includes eight essential amino acids your body needs for overall health and vitality. Goatein Ig may be tolerated by those who cannot digest cow"s milk because the protein molecules in goat"s milk have a different structure than those in cow"s milk. Additionally, Goatein Ig protein is partially predigested using Garden of Life"s proprietary Poten-Zyme fermentation process to assist nutrient absorption and delivery. Goatein Ig goats are not fed pesticides, herbicides, growth hormones or antibiotics.