The Natural Health Practice Advanced Probiotic Support is high strength and quality source of beneficial bacteria for balancing your digestive health and supporting your immune system. This supplement gives you 22 billion beneficial bacteria including 12 billion bifidobacteria and 10 billion lactobacillus acidophilus organisms. It contains added prebiotics to feed the beneficial bacteria, gamma oryzanol for digestive comfort and glutamine, the most important amino acid for healthy gastrointestinal function. There is no need to refrigerate as the beneficial bacteria are freeze-dried and are activated after you have swallowed them, so brilliant when travelling. Advanced Probiotic Support is not a liquid so no preservatives are needed. This product is Kosher certified. Dairy free, Gluten free, Wheat free