VITAGEN Regular contains billions of good bacteria in one wholesome bottle. These good bacteria are known as 'Lactobacillus acidophilus' & 'Lactobacillus casei' and helps your body stimulate a strong immune system as well as improves the digestion process. VITAGEN is the true cultured milk drink with real fruit juice, making it the perfect cultured milk drink for everyone. Storage Requirements: Keep Refrigerated (below 4°c)