NutriStart Naturally Lactospore Microflora - Probiotic formula that helps to restore gastrointestinal balance. Lactospore works on restoring gastrointestinal balance through competitive inhibition of pathogens, the production of L-(+) lactic acid and hydrogen peroxide, and production of bacteriocins, a sort of natural antibiotic that suppresses the growth of putrefactive bacteria. Lactospore is not enteric coated as it survives stomach acid and travels to the gut where is will become active. No need to refrigerate as it is shelf stable.