BioFlavX PGE from Green Earth Naturally is designed to improve poultry health and performance. The company says it enhances the growth of gut flora, stabalizes gut pH levels and inhibits growth of performance-reducing pathogens. It contains a blend of botanical extracts, organic acids, phytoalexins, essential oils, saponins and bioflavonoids, according to Green Earth Naturally. BioFlavX PGE can be diluted and fed through the water line medicator.