Got (first) milk? Bovine colostrum firm targets food & beverage as immunity trend gathers pace Immunity claims on new product launches have surged during the pandemic as companies sprinkle in everything from vitamin C and D to zinc, probiotics, postbiotics, elderberry and Cordyceps to their wares to tap into the trend. But what else is in the immune health toolkit, and could bovine colostrum (aka ‘first milk’) move beyond the supplements market and gain traction in food and beverage? The stuff lactating mammals produce just after giving birth, colostrum is packed with immunoglobulins and other nutrients that help support a newborn’s immune system and seed a healthy gut microbiome in the first few days of life.