Dietary Supplement+ PrebioticsPromotes Healthy Gut FloraDoes Not Require RefrigerationResists Stomach Acid BreakdownWith Prebiotics: Food for Beneficial BacteriaYoutheory® Spore Probiotic is a better way to replenish your body's microflora. This spore probiotic combination is uniquely designed to survive and thrive. The word "spore" means "seed". And like a seed, each spore probiotic is covered by a naturally protective shell that safeguards the cell unit it reaches the intestinal tract.