LB Booster™ is a medium additive that increases the level of production of recombinant proteins. Particularly suitable for improving the productivity of LB Broth LB Booster™ can increase biomass levels by a factor of up to 5 in any medium formulation. In addition the supplement provides essential nutrients selected for their ability to increase the relative level of recombinant protein accumulation. LB Booster™ is supplied as a powder and as a ready to use 20x concentrate. LB Booster™ is a proprietary blend of fructose and nutrient supplements.