Similac Gold is a new generation milk formula with 2'-FL breast milk oligosaccharides. Similac Gold is the first infant formula in Russia with 2'-FL breast milk oligosaccharides, a unique immune-boosting ingredient previously found only in breast milk. 2'-FL oligosaccharides stimulate the growth of beneficial bacteria in the gut, which is home to 70% of the cells of the immune system. FOS probiotics are foods for beneficial intestinal microflora that promote soft stools.