Ortho Biotic probiotics supports good gut bacteria. This probiotic delivers seven active strains shown to promote a healthy gut. They maintain a healthy environment for digestion and nutrient absorption. Most importantly, the strains work together to help maintian gastrointestinal balance, increase gut immunity, support bowel regularity, and support digestion and micronutrient absorption. Guaranteed strength at expiration. No refrigeration required. Does not contain wheat, cluten, soy, corn, animal or dairy products, fish, shellfish, peanuts, tree nuts, egg, artificial colors, artificial sweeteners, or preservatives.